'+pages+''); $('.stream > div:odd').addClass('bgr_color'); updateHeight('#history'); }); window.activateTabArea = ensure(function(tab, areas){ var parsed = false; var parts = (areas || '').split('/'); window.fsonload = $.inArray('fs', parts) >= 0; if(fsonload){ parts.splice(parts.indexOf('fs'), 1); } var replayMode = false; if($.inArray('replay', parts)>=0){ replayMode = 'replay'; } var noSoundMode = false; if($.inArray('nosound', parts)>=0){ noSoundMode = 'nosound'; } if($.inArray('ns', parts)>=0){ noSoundMode = 'ns'; } var previewMode = null; if($.inArray('p', parts)>=0){ previewMode = 'p'; } if($.inArray('preview', parts)>=0){ previewMode = 'preview'; } if($.inArray('repeat', parts)>=0){ replayMode = 'repeat'; } if($.inArray('r', parts)>=0 || $.inArray('ro', parts)>=0){ replayMode = 'r'; } if(replayMode){ parts.splice(parts.indexOf(replayMode), 1); } if(noSoundMode){ parts.splice(parts.indexOf(noSoundMode), 1); } if(previewMode){ parts.splice(parts.indexOf(previewMode), 1); } if(previewMode){ if(!parts.length){ parts = ['1-14', '999:59']; } } var area = parts[0]; if(tab == 'history' && false){ var page = parseInt(area || '1') || 1; $.ajax({ url: 'https://login.wn.com/recent/json/?pp='+history_pp+'&skip='+history_pp*(page-1), dataType: 'jsonp', success: function(response){ $ensure(function(){ renderHistory(response, page); }); } }); return true; } if(tab == 'global_history' && false){ var page = parseInt(area || '1') || 1; globalHistory.fetchStream(page, '', function(){ updateHeight('#global_history'); }); return true; } if(tab == 'my_playlists' && false){ var page = parseInt(area || '1') || 1; myPlaylists.fetchStream(page, '', function(){ updateHeight('#my_playlists'); }); return true; } if(tab == 'my_videos' && false){ var page = parseInt(area || '1') || 1; myVideos.fetchStream(page, '', function(){ updateHeight('#my_videos'); }); return true; } if(tab == 'related_sites' && areas && matchPosition(areas)){ var seconds = parsePosition(areas); scrollRelated(seconds); return false; } if(matchPosition(area) || matchAction(area)){ parts.unshift('1'); area = parts[0]; } if(tab == 'expand' && area && area.match(/\d+/)) { var num = parseInt(area); if(num < 100){ //FIX ME. 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playShouldStart = null; } }; function loadMoreVideos(playerId, vp, start, finish, callback){ var playlistInfo = playlists[playerId-1]; if(playlistInfo.loading >= finish) return; playlistInfo.loading = finish; $.ajax({ url: '/api/upge/cheetah-photo-search/query_videos2', dataType: 'json', data: { query: playlistInfo.query, orderby: playlistInfo.orderby, start: start, count: finish-start }, success: function(response){ var pl = vp.getPlaylist().slice(0); pl.push.apply(pl, response); vp.setPlaylist(pl); callback(); } }); } if(parts.length == 1 && matchDash(parts[0])){ var pl = vp.getActualPlaylist(); var vids = parseDash(parts[0]); parts = []; for(var i = 0; i < vids.length; i++){ playQueue.push({ 'video': pl[vids[i]-1], 'start': 0, 'stop': null }) } if(vids.length){ if(vids[vids.length-1]-1>=pl.length){ loadMoreVideos(playerId, vp, pl.length, vids[vids.length-1], function(){ if(fsonload){ activateTabArea(tab, parts[0]+'/fs'); }else{ activateTabArea(tab, parts[0]); } var pls = vp.getPlaylist(); vp.playFromPlaylist(pls[pls.length-1]); vp.playVideo(); scrollToPlaylistPosition(vp); }); return true; } } if(playQueue){ playQueueUpdate(); vp.playVideo(); parsed = true; playShouldStart = 0; } } if(previewMode){ var vids = []; var dur = 0; var pl = vp.getActualPlaylist(); area = parts[0]; if(parts.length == 1 && matchPosition(parts[0])){ vids = parseDash('1-'+pl.length); dur = parsePosition(parts[0]); parts = []; }else if(parts.length == 1 && matchDash(parts[0])){ vids = parseDash(parts[0]); dur = parsePosition("999:59"); parts = []; } if(parts.length == 2 && matchDash(parts[0]) && matchPosition(parts[1])){ vids = parseDash(parts[0]); dur = parsePosition(parts[1]); parts = []; } for(var i = 0; i < vids.length; i++){ playQueue.push({ 'video': pl[vids[i]-1], 'start': 0, 'stop': dur }) } if(playQueue){ playQueueUpdate(); vp.playVideo(); parsed = true; } } if(parts.length>1){ for(var i = 0; i < parts.length; i++){ var sel = findMatchingVideo(vp, parts[i]); if(sel){ playQueue.push({ 'video': sel, 'start': 0, 'stop': null }) } } if(playQueue){ playQueueUpdate(); vp.playVideo(); parsed = true; } }else if(area){ var sel = findMatchingVideo(vp, area); if(sel){ vp.playFromPlaylist(sel); playShouldStart = 0; parsed = true; } } if(fsonload || replayMode){ playShouldStart = 0; } if(document.location.search.match('at=|queue=')){ var opts = document.location.search.replace(/^\?/,'').split(/&/g); for(var o in opts){ if(opts[o].match(/^at=(\d+:)?(\d+:)?\d+$/)){ playShouldStart = parsePosition(opts[o].substr(3)) } if(opts[o].match(/^queue=/)){ playQueue = parseList(opts[o].substr(6)); if(playQueue){ playQueuePosition = 0; playQueueUpdate(); } } } } if(matchPosition(parts[1])){ playShouldStart = parsePosition(parts[1]); parsed = true; } if(matchAction(parts[1])){ var action = parseAction(vp, area+'/'+parts[1]); playShouldStart = action.start; playShouldStop = action.stop; parsed = true; } if(playShouldStart !== null && !playQueue.length){ playQueue.push({ video: vp.getCurrentVideo(), start: playShouldStart, stop: playShouldStop }); } if(playShouldStart != null){ setInterval(function(){ if(playShouldStop && vp.currentPlayer && vp.currentPlayer.getCurrentTime() > playShouldStop){ playShouldStop = null; if(vp.getCurrentVideo() == playQueue[playQueuePosition].video){ playQueueAdvancePosition(); }else{ playShouldStart = null; } } }, 500); vp.playerContainer.bind('videoplayer.player.statechange', function(e, state){ if(state == 'ended'){ // advance to the next video playQueueAdvancePosition(); } }); vp.playerContainer.bind('videoplayer.player.readychange', function(e, state){ if(state){ updateVolumeState(); if(playShouldStart !== null){ vp.seekTo(playShouldStart); playShouldStart = null; }else{ playShouldStop = null; // someone started other video, stop playing from playQueue } } if(fsonload) { triggerFullscreen(playerId); fsonload = false; } }); } } else if(tab.match(/^wiki\d+$/)){ if(firstTimeActivate){ load_wiki($('#'+tab), function(){ if(area){ var areaNode = $('#'+area); if(areaNode.length>0){ $('html, body').scrollTop(areaNode.offset().top + 10); return true; } } }); } } return parsed; }) window.activateTab = ensure(function(tab, area){ window.activeArea = null; if(tab == 'import_videos'){ if(area){ import_videos(area); }else{ start_import(); } return true; } if(tab == 'chat'){ update_chat_position($('.chat').eq(0)); window.activeArea = 'chat'; jQuery('.tabtrigger').offscreentabs('activateTab', 'chat'); return true; } if(tab in rev_names){ tab = rev_names[tab]; } if(tab.match(':')){ return false; } var sup = $('ul li a[id=#'+tab+']'); if(sup && sup.length>0){ window.activeArea = area; sup.first().click(); if(!window.activateTabArea(tab, area)){ window.activeArea = null; } window.activeArea = null; return true; }else{ var have_tabs = $('#playlist_menu li').length; if(tab.match(/^playlists?\d+$/)){ var to_add = +tab.substring(8).replace(/^s/,'')-have_tabs; if(to_add>0 && have_tabs){ add_more_videos(to_add); return true; } } } return false; }); window.currentPath = ensure(function(){ return window.lastHistory.replace(basepath, '').split('?')[0]; }); window.main_tab = window.main_tab || 'videos'; window.addHistory = ensure(function(path){ if(window.console && console.log) console.log("Adding to history: "+path); 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Buffer solution

A buffer solution (more precisely, pH buffer or hydrogen ion buffer) is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. Its pH changes very little when a small or moderate amount of strong acid or base is added to it and thus it is used to prevent changes in the pH of a solution. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical applications. Many life forms thrive only in a relatively small pH range so they utilize a buffer solution to maintain a constant pH. In nature, the bicarbonate buffering system is used to regulate the pH of blood.

Principles of buffering

Buffer solutions achieve their resistance to pH change because of the presence of an equilibrium between the acid HA and its conjugate base A.

When some strong acid is added to an equilibrium mixture of the weak acid and its conjugate base, the equilibrium is shifted to the left, in accordance with Le Chatelier's principle. Because of this, the hydrogen ion concentration increases by less than the amount expected for the quantity of strong acid added. Similarly, if strong alkali is added to the mixture the hydrogen ion concentration decreases by less than the amount expected for the quantity of alkali added. The effect is illustrated by the simulated titration of a weak acid with pKa = 4.7. The relative concentration of undissociated acid is shown in blue and of its conjugate base in red. The pH changes relatively slowly in the buffer region, pH = pKa ± 1, centered at pH = 4.7 where [HA] = [A]. The hydrogen ion concentration decreases by less than the amount expected because most of the added hydroxide ion is consumed in the reaction

Podcasts:

  • Buffer Solutions

    This chemistry video tutorial explains how to calculate the pH of a buffer solution using the henderson hasselbalch equation. It explains the concept, components, and function of a buffer solution. A buffer solution consist of a weak acid and its conjugate weak base counterpart. It's purpose is to maintain a relatively constant pH value. This video discusses the relationship between the pH and pKa values with the relative amounts of weak acid and weak base components in the buffer solution. This video contains plenty of examples and practice problems. Get The Full 1 Hour 40 Min Video: https://www.patreon.com/MathScienceTutor PDF Worksheet - 16 Questions: https://bit.ly/3QtcHST Direct Link to The Full Video: https://bit.ly/3jT4gUA Acids-Bases - Free For...

    published: 09 Apr 2021
  • Buffer Solutions

    Visit our website for the notes of this lecture: https://knowbeetutoring.wordpress.com/ Get private tutoring from anywhere in the world, via your computer, from this instructor. He offers help in Organic Chemistry, General Chemistry, Physics, MCAT, PCAT, and DAT. SUBMIT AN MCAT PROBLEM AND I WILL SHOW YOU HOW TO SOLVE IT VIA VIDEO. FREE. VISIT WEBSITE FOR DETAILS. https://knowbeetutoring.wordpress.com/

    published: 03 Feb 2015
  • Equilibrium | Ionic Equilibrium 05 | Buffer Solutions JEE MAINS/NEET /JEE ADVANCE -Part 1

    Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App. Download the App from Google Playstore ( https://bit.ly/2SHIPW6 ) Physicswallah Instagram Handle : https://www.instagram.com/physicswallah/ Physicswallah Facebook Page: https://www.facebook.com/physicswallah Physicswallah Twitter Account : https://twitter.com/PhysicswallahAP?s=20 Physicswallah App on Google Play Store : https://bit.ly/2SHIPW6 Physicswallah Website: http://physicswallahalakhpandey.com/ LAKSHYA Batch(2020-21) Join the Batch on Physicswallah App https://bit.ly/2SHIPW6 Registration Open!!!! What will you get in the Lakshya Batch? 1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NE...

    published: 01 Nov 2018
  • Buffer solution(Part A) Ch#8 Chemistry class11 PGC

    published: 22 Mar 2021
  • Buffer Solutions Explained Simply: What is a Buffer and How Does a Buffer Solution Work?

    In this video I will give you a simple and easy to follow explanation of what exactly a buffer solution is, how a buffer solution is made and how a buffer solution works to keep pH constant.

    published: 27 Jul 2020
  • Acid-Base Equilibria and Buffer Solutions

    Remember those pesky iceboxes? Weak acids and bases establish equilibria, so we have to do iceboxes to figure out things about them. But don't worry, buffers are neat. Watch the whole General Chemistry playlist: http://bit.ly/ProfDaveGenChem Study for the AP Chemistry exam with me: https://bit.ly/ProfDaveAPChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem Biology Tutorials: http://bit.ly/ProfDaveBio Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths EMAIL► ProfessorDaveExplains@gmail.com PATREON► http://patreon.com/ProfessorDaveExplains Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscie...

    published: 12 Jan 2016
  • Buffer solution pH calculations | Chemistry | Khan Academy

    Example of calculating the pH of solution that is 1.00 M acetic acid and 1.00 M sodium acetate using ICE table. Another example of calculating pH of a solution that is 0.15 M ammonia and 0.35 M ammonium nitrate. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/buffers-and-hendersen-hasselbalch?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry Missed the previous lesson? https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/chem31-buffers?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year h...

    published: 23 Aug 2014
  • Buffers, the Acid Rain Slayer: Crash Course Chemistry #31

    In this episode, Hank talks about how nutty our world is via Buffers! He defines buffers and their compositions and talks about carbonate buffering systems in nature, acid rain, pH of buffers, and titration. Plus, a really cool experiment using indicators to showcase just how awesome buffers are. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ -- Table of Contents Nature is Nutty 0:00 Carbonate Buffering and Acid Rain 0:35 Definition of Buffers 1:47 Composition of Buffers 2:26 pH of Buffers 3:33 Titration 7:43 Carbonate Buffering in Nature 7:12 - Crash Course is on Patreon! You can support us direc...

    published: 16 Sep 2013
  • What is a Buffer?

    This video discusses the definition of a buffer, the components required to create a buffer and how to identify if you have a buffer solution.

    published: 04 Dec 2017
developed with YouTube
Buffer Solutions
33:21

Buffer Solutions

  • Order:
  • Duration: 33:21
  • Uploaded Date: 09 Apr 2021
  • views: 1181012
This chemistry video tutorial explains how to calculate the pH of a buffer solution using the henderson hasselbalch equation. It explains the concept, components, and function of a buffer solution. A buffer solution consist of a weak acid and its conjugate weak base counterpart. It's purpose is to maintain a relatively constant pH value. This video discusses the relationship between the pH and pKa values with the relative amounts of weak acid and weak base components in the buffer solution. This video contains plenty of examples and practice problems. Get The Full 1 Hour 40 Min Video: https://www.patreon.com/MathScienceTutor PDF Worksheet - 16 Questions: https://bit.ly/3QtcHST Direct Link to The Full Video: https://bit.ly/3jT4gUA Acids-Bases - Free Formula Sheet: https://bit.ly/3NsE7aP ________________________________________ Chapter 15 - Video Lessons: https://www.video-tutor.net/aqueous-equilibria.html Full 1 Hour 40 Minute Video on YouTube: https://www.youtube.com/watch?v=us_x9cbQs94 Join The YouTube Membership Program: https://bit.ly/46xaQTR General Chemistry 2 Final Exam Review: https://www.youtube.com/watch?v=lSmJN1_uVpI
https://wn.com/Buffer_Solutions
Buffer Solutions
3:22

Buffer Solutions

  • Order:
  • Duration: 3:22
  • Uploaded Date: 03 Feb 2015
  • views: 218982
Visit our website for the notes of this lecture: https://knowbeetutoring.wordpress.com/ Get private tutoring from anywhere in the world, via your computer, from this instructor. He offers help in Organic Chemistry, General Chemistry, Physics, MCAT, PCAT, and DAT. SUBMIT AN MCAT PROBLEM AND I WILL SHOW YOU HOW TO SOLVE IT VIA VIDEO. FREE. VISIT WEBSITE FOR DETAILS. https://knowbeetutoring.wordpress.com/
https://wn.com/Buffer_Solutions
Equilibrium | Ionic Equilibrium 05 | Buffer Solutions JEE MAINS/NEET /JEE ADVANCE -Part 1
1:32:08

Equilibrium | Ionic Equilibrium 05 | Buffer Solutions JEE MAINS/NEET /JEE ADVANCE -Part 1

  • Order:
  • Duration: 1:32:08
  • Uploaded Date: 01 Nov 2018
  • views: 2026004
Live Classes, Video Lectures, Test Series, Lecturewise notes, topicwise DPP, dynamic Exercise and much more on Physicswallah App. Download the App from Google Playstore ( https://bit.ly/2SHIPW6 ) Physicswallah Instagram Handle : https://www.instagram.com/physicswallah/ Physicswallah Facebook Page: https://www.facebook.com/physicswallah Physicswallah Twitter Account : https://twitter.com/PhysicswallahAP?s=20 Physicswallah App on Google Play Store : https://bit.ly/2SHIPW6 Physicswallah Website: http://physicswallahalakhpandey.com/ LAKSHYA Batch(2020-21) Join the Batch on Physicswallah App https://bit.ly/2SHIPW6 Registration Open!!!! What will you get in the Lakshya Batch? 1) Complete Class 12th + JEE Mains/ NEET syllabus - Targeting 95% in Board Exams and Selection in JEE MAINS / NEET with a Strong Score under Direct Guidance of Alakh Pandey. 2)Live Classes and recorded Video Lectures (New, different from those on YouTube) 3)PDF Notes of each class. 4)DPP: Daily Practice Problems with each class having 10 questions based on the class of JEE Mains/NEET level. 5)Syllabus Completion by end of January, 2021 with topicwise discussion of Last 10 Years Problems in Boards, JEE Mains/NEET within Lecture. 6)The Complete Course (Video Lectures, PDF Notes, any other Study Material) will be accessible to all the students untill JEE Mains & NEET 2021 (nearly May 2021) 7)In case you missed a live class, you can see its recording. 8)You can view the videos any number of times. 9)Each chapter will be discussed in detail with all concepts and numericals 10)Chapterwise Approach towards JEE Mains/ NEET & Board Exams. ****Test Series for XI & XII**** We provide you the best test series for Class XI,XII, JEE, NEET chapterwise, which will be scheduled for whole year. The test series follows very logical sequence of Basic to Advance questions.& Evaluation of Test and Solution to all the questions at the end of the test. Class 11 chapter 7 | Equilibrium | Chemical Equilibrium 01 : Introduction | IIT JEE MAINS / NEET https://www.youtube.com/watch?v=sCUgeC5ACv8&list=PLF_7kfnwLFCG5aiuP99QMRJnfh_MXZqUm Equlibrium | Chemical Equilibrium 02 | Equilibrium Constant Kp and Kc | IIT JEE MAINS /NEET https://www.youtube.com/watch?v=oyr7q5BrGEA&list=PLF_7kfnwLFCG5aiuP99QMRJnfh_MXZqUm&index=2&pbjreload=10 Equilibrium | Chemical Equlibrium 03 | Law Of chemical Equilibrium Numericals IIT JEE / NEET https://www.youtube.com/watch?v=z2G52O_7nd4&index=4&list=PLF_7kfnwLFCG5aiuP99QMRJnfh_MXZqUm Equlibrium | Chemical Equilibrium 04 | Degree of Dissociation and Observed density IIT JEE / NEET https://www.youtube.com/watch?v=x13K19_JwgY&list=PLF_7kfnwLFCG5aiuP99QMRJnfh_MXZqUm&index=5 Equilibrium || Chemical Equilibrium 05 || Le - Chatelier's Principle IIT JEE MAINS / NEET || https://www.youtube.com/watch?v=NVZ4Jb9tLX4&list=PLF_7kfnwLFCG5aiuP99QMRJnfh_MXZqUm&index=6 ----------------- IONIC EQUILIBRIUM ------------- Class 11 chapter 7 | Equilibrium | Ionic Equilibrium 01 | Theories Of Acids and Bases JEE MAINS/NEET https://www.youtube.com/watch?v=Uql1eQGq9Dg&list=PLF_7kfnwLFCGNdqR8jaKSpxiiR83vM3_r&index=6 Ionic Equilibrium 02 | Ionisation Constant Of Weak Acid and Base | Ionic Product of Water JEE /NEET https://www.youtube.com/watch?v=Dgdz6bfRMdc&index=7&list=PLF_7kfnwLFCGNdqR8jaKSpxiiR83vM3_r Ionic Equilibrium 03 || PH Of Solutions | How to find PH | How to calculate PH of any Solution https://www.youtube.com/watch?v=uuGl5o8b3Zk&index=8&list=PLF_7kfnwLFCGNdqR8jaKSpxiiR83vM3_r Ionic Equilibrium 04 || Common - Ion Effect IIT JEE MAINS/ NEET || https://www.youtube.com/watch?v=xqq78GsLXSA&list=PLF_7kfnwLFCGNdqR8jaKSpxiiR83vM3_r&index=9 Equilibrium | Ionic Equilibrium 05 | Buffer Solutions JEE MAINS/NEET /JEE ADVANCE -Part 1 https://www.youtube.com/watch?v=KH0w5TZnJaA&list=PLF_7kfnwLFCGNdqR8jaKSpxiiR83vM3_r&index=10 Equilibrium | Ionic Equilibrium 06 | Buffer Solutions JEE MAINS/ NEET/ JEE ADVANCE -Part 2 https://www.youtube.com/watch?v=30eFAm74wp0&list=PLF_7kfnwLFCGNdqR8jaKSpxiiR83vM3_r&index=11 Ionic Equilibrium 07 || Salt Hydrolysis IIT JEE MAINS / JEE ADVANCE / NEET || pH of Salts https://www.youtube.com/watch?v=I33BwmAz1sY&list=PLF_7kfnwLFCGNdqR8jaKSpxiiR83vM3_r&index=12 Ionic Equilibrium 08 | Solubility and Solubility Product IIT JEE MAINS / JEE ADVANCE / NEET || https://www.youtube.com/watch?v=1tRdbmroncE&list=PLF_7kfnwLFCGNdqR8jaKSpxiiR83vM3_r&index=13
https://wn.com/Equilibrium_|_Ionic_Equilibrium_05_|_Buffer_Solutions_Jee_Mains_Neet_Jee_Advance_Part_1
Buffer solution(Part A) Ch#8 Chemistry class11 PGC
32:31

Buffer solution(Part A) Ch#8 Chemistry class11 PGC

  • Order:
  • Duration: 32:31
  • Uploaded Date: 22 Mar 2021
  • views: 2289
https://wn.com/Buffer_Solution(Part_A)_Ch_8_Chemistry_Class11_Pgc
Buffer Solutions Explained Simply: What is a Buffer and How Does a Buffer Solution Work?
7:31

Buffer Solutions Explained Simply: What is a Buffer and How Does a Buffer Solution Work?

  • Order:
  • Duration: 7:31
  • Uploaded Date: 27 Jul 2020
  • views: 174014
In this video I will give you a simple and easy to follow explanation of what exactly a buffer solution is, how a buffer solution is made and how a buffer solution works to keep pH constant.
https://wn.com/Buffer_Solutions_Explained_Simply_What_Is_A_Buffer_And_How_Does_A_Buffer_Solution_Work
Acid-Base Equilibria and Buffer Solutions
5:04

Acid-Base Equilibria and Buffer Solutions

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  • Duration: 5:04
  • Uploaded Date: 12 Jan 2016
  • views: 497174
Remember those pesky iceboxes? Weak acids and bases establish equilibria, so we have to do iceboxes to figure out things about them. But don't worry, buffers are neat. Watch the whole General Chemistry playlist: http://bit.ly/ProfDaveGenChem Study for the AP Chemistry exam with me: https://bit.ly/ProfDaveAPChem Organic Chemistry Tutorials: http://bit.ly/ProfDaveOrgChem Biochemistry Tutorials: http://bit.ly/ProfDaveBiochem Biology Tutorials: http://bit.ly/ProfDaveBio Classical Physics Tutorials: http://bit.ly/ProfDavePhysics1 Modern Physics Tutorials: http://bit.ly/ProfDavePhysics2 Mathematics Tutorials: http://bit.ly/ProfDaveMaths EMAIL► ProfessorDaveExplains@gmail.com PATREON► http://patreon.com/ProfessorDaveExplains Check out "Is This Wi-Fi Organic?", my book on disarming pseudoscience! Amazon: https://amzn.to/2HtNpVH Bookshop: https://bit.ly/39cKADM Barnes and Noble: https://bit.ly/3pUjmrn Book Depository: http://bit.ly/3aOVDlT
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Buffer solution pH calculations | Chemistry | Khan Academy
11:39

Buffer solution pH calculations | Chemistry | Khan Academy

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  • Uploaded Date: 23 Aug 2014
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Example of calculating the pH of solution that is 1.00 M acetic acid and 1.00 M sodium acetate using ICE table. Another example of calculating pH of a solution that is 0.15 M ammonia and 0.35 M ammonium nitrate. Watch the next lesson: https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/buffers-and-hendersen-hasselbalch?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry Missed the previous lesson? https://www.khanacademy.org/science/chemistry/acid-base-equilibrium/buffer-solutions/v/chem31-buffers?utm_source=YT&utm_medium=Desc&utm_campaign=chemistry Chemistry on Khan Academy: Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful. About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s Chemistry channel: https://www.youtube.com/channel/UCyEot66LrwWFEMONvrIBh3A?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
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Buffers, the Acid Rain Slayer: Crash Course Chemistry #31
11:41

Buffers, the Acid Rain Slayer: Crash Course Chemistry #31

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  • Duration: 11:41
  • Uploaded Date: 16 Sep 2013
  • views: 1074887
In this episode, Hank talks about how nutty our world is via Buffers! He defines buffers and their compositions and talks about carbonate buffering systems in nature, acid rain, pH of buffers, and titration. Plus, a really cool experiment using indicators to showcase just how awesome buffers are. Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ -- Table of Contents Nature is Nutty 0:00 Carbonate Buffering and Acid Rain 0:35 Definition of Buffers 1:47 Composition of Buffers 2:26 pH of Buffers 3:33 Titration 7:43 Carbonate Buffering in Nature 7:12 - Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids
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What is a Buffer?
4:27

What is a Buffer?

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  • Uploaded Date: 04 Dec 2017
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This video discusses the definition of a buffer, the components required to create a buffer and how to identify if you have a buffer solution.
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Buffer Solutions

This chemistry video tutorial explains how to calculate the pH of a buffer solution using the henderson hasselbalch equation. It explains the concept, components, and function of a buffer solution. A buffer solution consist of a weak acid and its conjugate weak base counterpart. It's purpose is to maintain a relatively constant pH value. This video discusses the relationship between the pH and pKa values with the relative amounts of weak acid and weak base components in the buffer solution. This video contains plenty of examples and practice problems. Get The Full 1 Hour 40 Min Video: https://www.patreon.com/MathScienceTutor PDF Worksheet - 16 Questions: https://bit.ly/3QtcHST Direct Link to The Full Video: https://bit.ly/3jT4gUA Acids-Bases - Free Formula Sheet: https://bit.ly/3NsE7aP ________________________________________ Chapter 15 - Video Lessons: https://www.video-tutor.net/aqueous-equilibria.html Full 1 Hour 40 Minute Video on YouTube: https://www.youtube.com/watch?v=us_x9cbQs94 Join The YouTube Membership Program: https://bit.ly/46xaQTR General Chemistry 2 Final Exam Review: https://www.youtube.com/watch?v=lSmJN1_uVpI
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Buffer solution

A buffer solution (more precisely, pH buffer or hydrogen ion buffer) is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. Its pH changes very little when a small or moderate amount of strong acid or base is added to it and thus it is used to prevent changes in the pH of a solution. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical applications. Many life forms thrive only in a relatively small pH range so they utilize a buffer solution to maintain a constant pH. In nature, the bicarbonate buffering system is used to regulate the pH of blood.

Principles of buffering

Buffer solutions achieve their resistance to pH change because of the presence of an equilibrium between the acid HA and its conjugate base A.

When some strong acid is added to an equilibrium mixture of the weak acid and its conjugate base, the equilibrium is shifted to the left, in accordance with Le Chatelier's principle. Because of this, the hydrogen ion concentration increases by less than the amount expected for the quantity of strong acid added. Similarly, if strong alkali is added to the mixture the hydrogen ion concentration decreases by less than the amount expected for the quantity of alkali added. The effect is illustrated by the simulated titration of a weak acid with pKa = 4.7. The relative concentration of undissociated acid is shown in blue and of its conjugate base in red. The pH changes relatively slowly in the buffer region, pH = pKa ± 1, centered at pH = 4.7 where [HA] = [A]. The hydrogen ion concentration decreases by less than the amount expected because most of the added hydroxide ion is consumed in the reaction

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