OCR A 5.1.3 Acids, Bases and Buffers REVISION

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  • Опубликовано: 26 июл 2024
  • Complete revision for OCR A A Level Chemistry. To buy PowerPoint used in this video please visit my tes shop - www.tes.com/teaching-resource...

Комментарии • 67

  • @tifeb503
    @tifeb503 3 года назад +95

    1:01:31 for buffers

  • @georgiapactor4790
    @georgiapactor4790 2 года назад +42

    I just accidentally skipped to the OCR Acids and Bases vid instead of AQA and has a major panic hahaha. 'Who the hell is Lavoisier and what the hell has he done with Bronsted-Lowry?! '😂 Thank you so much though for your videos, I cannot explain what a difference you have made to self-teaching. Fingers crossed for the exams now! Thanks again.

  • @ellieves2209
    @ellieves2209 3 года назад +42

    I was so confused on this topic before I found your video. Thank you so much for creating this online resource !!

  • @yaseenm1917
    @yaseenm1917 2 года назад +17

    A week away from exams - thank you, the video has helped a lot!

  • @sachinbhandari3506
    @sachinbhandari3506 3 года назад +88

    Thanks for the quality content that you provide for free.

  • @tobimillar5899
    @tobimillar5899 2 года назад +24

    youre a life saver! I'm roughly a month off my exams now and I'm really feeling the pressure now.

    • @aleenhussain5990
      @aleenhussain5990 2 года назад +17

      im less than 24 hours away from my exam and i am really feeling the pressure now

    • @isabdel3975
      @isabdel3975 Год назад +1

      @@aleenhussain5990 did u pass cuz?

    • @zara3904
      @zara3904 Год назад +2

      @@isabdel3975 not him but i binge watched them all the night before and came out with an A

  • @strafeyfn5717
    @strafeyfn5717 2 года назад +20

    Hi there
    Just want to say thank you. Having a really hard time understanding some calculations in this topic and this really helped relieve a lot of that stress so i can go away and be able to practice them. It's the first time i've used a RUclips video to help (I didn't think it would work) but it has helped me loads so you have gained a new subscriber :). Thanks again

  • @tabithasweeney5402
    @tabithasweeney5402 3 года назад +3

    I’m doing CCEA such a great help!! Thanks

  • @bellastarmartin4601
    @bellastarmartin4601 Год назад +5

    Sir honest you're the reason I'll get A* in chemistry because these videos are so much more helpful than my own classnotes😮.Thank you so much I now understand this topic.Keep up the great content 👍

  • @ayniee1897
    @ayniee1897 4 года назад +5

    Brilliant video as always

  • @callmewhateveryouwant5263
    @callmewhateveryouwant5263 3 года назад +17

    thank you sir you absolute legend

  • @edward2291
    @edward2291 3 года назад +12

    Appreciate your hard work!

  • @zo.699
    @zo.699 Год назад +6

    I LOVE YOU SO MUCH THANK YOU FOR HELPING ME FINALLY UNDERSTAND

  • @katiedapp9883
    @katiedapp9883 2 года назад +9

    Thank you so so much for these videos! They're so helpful! :)

  • @Letik3x
    @Letik3x 4 месяца назад +1

    my teacher didn't even teach the PH changes ... thanks for these videos

  • @rahanlol
    @rahanlol Год назад +3

    33:28 equation should read [H+] = 2[Acid]

  • @isaacrobertson4318
    @isaacrobertson4318 2 года назад +7

    For diprotic acids isn’t it 2x[acid]=[H+]

  • @sathyakumar6089
    @sathyakumar6089 3 года назад +2

    Thank you so much!!!

  • @greg8869
    @greg8869 3 года назад +1

    the best videos !

  • @ding-dongditch8773
    @ding-dongditch8773 Год назад +3

    Is calculating the pH change of buffers in the OCR A spec, because I can't find it there or in the book?

  • @ba5849
    @ba5849 3 года назад +4

    Hello amazing video by the way, really informative!! I think at 21;35 I think I spotted a mistake you wrote "strong acids dissociate almost completely destroyed as it's dissociate poorly" but I think you meant weak acid am i right?

  • @Harry-es7zh
    @Harry-es7zh 2 года назад +2

    Thank you so much for this. I was just wondering why sometimes (A)- represents the number of moles added eg if 5 x10-3 moles of NaOH are added, I am sure that sometimes I have seen that the conc of (A)- becomes just 5 x 10-3/vol, but other times, like your example, why does (A)- increase or decrease in moles eg why are moles added to the moles of (A)- when NaOH is added

  • @user-gs5bf9ry3o
    @user-gs5bf9ry3o 2 года назад +2

    GREAT VID THANKS

  • @yumnabarhamji1700
    @yumnabarhamji1700 5 месяцев назад

    Amazing , thanks sir

  • @BenTV
    @BenTV 3 года назад +1

    Thanks Sir.

  • @Nasir-ll6kl
    @Nasir-ll6kl Год назад +4

    Hi Sir, I think there is a mistake on the acids and bases slide it should say weak acids dissociate poorly instead of strong. 🙂

    • @AlleryChemistry
      @AlleryChemistry  Год назад +3

      Thanks for letting me know. Will get the ammended on the slides 👍

  • @anthonyk6473
    @anthonyk6473 3 года назад +3

    Thank you🙏

  • @louisexxxxasasasa2567
    @louisexxxxasasasa2567 8 месяцев назад

    At the end on the uses of buffer bit, does the carbonic acid dissociate differently for the 2 different reactions?

  • @joannadaniel9396
    @joannadaniel9396 Год назад +4

    thanks

  • @beyazitdurdu7524
    @beyazitdurdu7524 3 года назад +1

    Does this cover the whole spec for chapter 20

  • @sarahshackleton9013
    @sarahshackleton9013 2 года назад +1

    So helpful thank you!!!!! :)

  • @Igor-oc3nm
    @Igor-oc3nm 3 месяца назад

    Goat, thank you

  • @user-gw2pk4kc1e
    @user-gw2pk4kc1e Год назад +1

    How can we know whether an acid or base completely ionizes or not?

  • @phillipamuseva8674
    @phillipamuseva8674 Год назад +1

    18:17 - Isn't water acting as the acid as it's donating a proton and B acts as a base as its accepting a proton?

  • @fbi8345
    @fbi8345 4 года назад +8

    Hi sir, do your videos completely cover the new aqa spec?
    and also how can i rearrange the videos to make it in line with the spec?
    thx sir i have an exam at the end of the month and i don't like the textbooks so your channel look like a great help!

    • @AlleryChemistry
      @AlleryChemistry  4 года назад +2

      Hi. I am looking to film new year 2 content including AQA however I have put this to vote. If you want AQA then cast your vote via my twitter account twitter.com/allerytutors/status/1258408810714140672?s=20

  • @louisexxxxasasasa2567
    @louisexxxxasasasa2567 8 месяцев назад

    At 17:25 you say that BH+ is the conjugate acid because it’s a proton donor? Did you mean to say proton acceptor?

  • @tayacarver5077
    @tayacarver5077 2 года назад +1

    When calculating the change in ph of a buffer when adding a strong base, how do you calculate the moles of acid and salt after it’s been added?

  • @jacklister962
    @jacklister962 3 года назад +1

    Thank you

  • @rali1243
    @rali1243 2 года назад

    Is this for AS year 1 aswell

    • @xashley3
      @xashley3 2 года назад

      no this is for A2!

  • @shaganag2914
    @shaganag2914 2 года назад

    hi

  • @bidishajaman9093
    @bidishajaman9093 2 года назад

    on 20;31 do u mean strong acids ionise completely and weak acids dont cause seems like u repeated the same sentence twice

    • @znn4125
      @znn4125 2 года назад +1

      weak acids partially dissociate