AQA A-Level Chemistry - Buffers

This video covers the buffers section of the Acids and Bases topic from the Unit 4 portion of the A2 spec.

[rhiannongreen]

I FINALLY UNDERSTAND BUFFERS!!!! THE DAY BEFORE MY EXAM!!! YOU SIR ARE AN ANGEL SENT FROM HEAVEN!!

[racheldoran]

[Timestamps]
Theory:
0:25 = Introduction to buffers
3:00 = Acidic buffers e.g. ethanoic acid/ sodium ethanoate
7:44 = Basic buffers e.g. ammonia/ ammonium chloride

Worked Exam Questions/ calculations:
11:35 = Jan 2011 U4 Q2 (c)&(d)
26:40 = Jan 2010 U4 Q2 (c)(iii)
33:25 = Jan 2013 U4 Q2 (c)
39:36 = Jun 2012 U4 Q3 (e)

[LofiWurld]

what a boss, chemistry doesnt make sense in school, but immediately i come home, i find i am actually understanding it!

[silver_]

You seemed so tired by the end haha, thank you so much for explaining, the exam questions help loads! Honestly you must be a great chemistry teacher that you use your free time to make videos for us, I ask my chemistry teacher for help on a question I don't understand and he answers so quickly and walks away. Who would have known, YouTube a distraction for me, has solved my chemistry problems... Thanks a billion!

[eleanorking]

This guy is my saviour thank the lord for ur existence

[lol.]

You deserve way more subs, singlehandedly saving my chemistry grades

[-cmd]

Never understood the whole taking away and adding moles to the different acids/salts until now! Seriously these videos help. From these I could basically just not even go to college and be able to do it! It's seriously helped me since I have had issues which meant I couldn't get to college, yet when I have been able to make my way in, to do a test in Chemistry, I have almost aced them! It is honestly the greatest thing to do just wish all my subjects had a YouTube channel like this, think you should be a trend starter here Rintoul, thanks for all the help with my AS too, lucky to be of a time where there's people who think outside the box like yourself sir.

Once again, thank you so much.

[TheBigShil]

Gone from 0 on the longer questions to 6 in one hit. Cheers mate ur an awesome youtube teacher. Best one for Chem by far

[katiemonks]

Thank you so much, this has just clarified buffers in my head completely! It was always the one topic I lost marks on no matter how much I revised. These videos are amazing.

[georgiapoolton]

firstly, thank you. you saved my AS grade, i was heading for an E but after using your videos I came out with a B! I was wondering if you have/would do a video covering the whole acid/base section including calculations as this is something i am struggling with. Your videos are seriously amazing and i will be recommending them to my classmates. Thanks again!!

[ProBitez]

you deserve an OBE for your videos on acids & bases, thank you!

[dirtydiana]

THIS VIDEO JUST SAVED MY LIFE!!!! Thank you so much for this brilliant video sir!!! :D

[andreaeasthope]

Whoah I actually understand buffers. Praise be to you sir! Anyone thinking about watching this but hesitating because of the length of the video, WATCH IT! It helped soso much!

[benlindsay]

4 years on your videos are still saving A level students everywhere. Cheers.

[zoe._.]

THANK YOU THANK YOU THANK NEVER THOUGHT I WOULD GET BUFFERS BUT I DO!!! I COULD CRY! THE APPRECIATION I HAVE FOR YOU AND THIS CHANNEL OMG THANK YOU!!!!

[zoetaylor]

Thank you! I've been struggling with this topic for a while and it all clicked when I was watching it:)

[alzbetavirdzekova]

you are the best sir, helping people all around the world! THANK YOU! Mikko Juusola would be proud of you :D

[gigi]

These videos are so helpful, especially with none of our class understanding what one of our teachers tells us!

[zoetaylor]

Thank you! I've been struggling with this topic for a while and it all clicked when I was watching it☺️

[charlotteherdman-grant]

Thank you so much, this is always the topic that stumps me and loses me loads of marks! That's the first time I've been able to do buffers questions and get the right answer, and feel confident while doing it. Thank you very much. :)