CIE AS level Chemistry 9701 | S21 Q12 | Fully Solved Paper | May/June 2021 Qp 12 | 9701/12/M/J/21

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  • Опубликовано: 7 янв 2025

Комментарии • 86

  • @LucidMindChem
    @LucidMindChem  2 года назад +1

    Contact:
    WhatsApp Only (+92-342-0722062)
    For useful Information regarding Cambridge Chemistry, Crash courses, Past paper sessions, Private tuitions, Group sessions Join this Group on WhatsApp
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  • @bushrawaqar8740
    @bushrawaqar8740 3 года назад +42

    cant be happier to see this perfect explanation to the paper

  • @Maishaaaaaaaaaa
    @Maishaaaaaaaaaa 2 года назад +15

    Now I don't regret taking chemistry and all the credit goes to you, thank you sooo much for explaining everything in details❤️

  • @orangetrumpet7683
    @orangetrumpet7683 2 года назад +6

    I’ve got my exam in 3 hours and your videos are extremely helpful for revision
    Thank you so much

    • @JouZali
      @JouZali 2 года назад

      How did you do?

  • @cubone909
    @cubone909 3 года назад +8

    Thank you so much Sir! You can’t imagine how grateful I am for your cie lectures!!

  • @CL-fg5ne
    @CL-fg5ne 2 года назад +4

    i must say, i learnt redox entirely from your videos. your explanations are spot on; cant donate but will certainly share your channel!

  • @idontknowwhatiamdoing8419
    @idontknowwhatiamdoing8419 7 месяцев назад +2

    sir i seriously dont know how to thank you enough, you are a life saver god bless you 😭😭

  • @faiyaznayeemhaque7316
    @faiyaznayeemhaque7316 2 года назад +8

    thank you for the examples drawing in from relative topics for each question. really helps to build a context and understand the questions better.

  • @JohnAlex5470
    @JohnAlex5470 3 года назад +15

    Thanks for the amazing explanation!!
    By the way will you upload Past Papers of A2 Chemistry in the near future?
    You're an amazing teacher and I'd love to learn more from you!

  • @Muhammad_Saifullah
    @Muhammad_Saifullah 2 года назад +3

    My favourite chemistry channels, (organic chem tutor and Lucid Mind)

  • @timathiwillathgamuwa1408
    @timathiwillathgamuwa1408 2 года назад +2

    Perfectly explained!!! You cleared all my doubts, even I could understand the concepts that weren't clear to me !!!

  • @storiesandfacts452
    @storiesandfacts452 2 года назад +3

    I hope your channels gets a million subs one day the way u explain kudos

  • @m.sufyanabbasi3404
    @m.sufyanabbasi3404 8 месяцев назад +1

    @LucidMindChem
    Assalam o alaikum Sir,
    in Q:10 calculation of Kp 21:00 you did not include the calculations of partial pressure, is it because the temperature is kept constant, kindly clarify..

  • @ManishChaudhary-lw3vc
    @ManishChaudhary-lw3vc Год назад +1

    Thank You so much sir
    You are a gem teacher for me
    Thanks for the so-clear solutions

  • @hassanjunaid6496
    @hassanjunaid6496 2 года назад +3

    Dis man iz juzt AMMMMAAAAZZZIIINNGGGGGG!!
    LIFEEE SAVERRR!
    We can't thenk ye enough 🤧😭
    Aur samaj ma naiii aa raya k kiaa likhu mai😫😫
    Thenkssss again😢🫂

  • @velocityvector3549
    @velocityvector3549 2 года назад +2

    Thank you so much for making these videos where you step by step solve them. Amazing video!

  • @mariamm4085
    @mariamm4085 2 года назад +2

    best explanations out there for a level chemistry

  • @loolowee
    @loolowee 7 месяцев назад +1

    Thank you so much your explanations helped me understand in such great depth 🩷 please keep making more videos 🙏🏼

  • @babitagoyal7813
    @babitagoyal7813 2 года назад +3

    What a wonderful explanation of q20

  • @Jssjjsnd
    @Jssjjsnd Год назад

    In question 26, 57:00 doesn’t hex-1-ene and hex-2-ene have chain isomerism aswell ( for example 5-methylpent-1-ene) ? Why didn’t u count those?

  • @girlwithacamera_
    @girlwithacamera_ 3 года назад +9

    SIR CAN U PLEASE MAKE A VIDEO EXPLAINING PAPER 13 OF 2021 MAY JUNE I HAVE MY EXAM THE DAY AFTER TOMORROW AND I JUST DONT UNDERSTAND SOME QUESTIONS

    • @cosmiceraser
      @cosmiceraser 3 года назад +2

      gl fam, i got it tmrw 😢

    • @girlwithacamera_
      @girlwithacamera_ 3 года назад +1

      @@cosmiceraser omg good luck to you too!! Also thanks :)

  • @dianaakaro8657
    @dianaakaro8657 2 года назад +2

    Can you explain more on number 8 as in why are you adding? Why not the normal enthalpy change that is the products minus the reactants

  • @sahar7990
    @sahar7990 3 года назад +4

    Thank you sir, you are a gem.

  • @mominafazilkhan7704
    @mominafazilkhan7704 3 года назад +5

    Thanks a lot, it really helped alot.
    Also can you please do may june 2021/13 variant.

  • @nitawilson4291
    @nitawilson4291 3 года назад +3

    Thank you Sir. Great clear explanation

  • @meowmeow-dw3bi
    @meowmeow-dw3bi Год назад

    the best chemistry tutor. sir i also had a question
    in q22 ( 45:40 ) why was the nomenclature of cooh not taken as no.1? as the priority of that functional group is the highest?
    you mentioned how you had cooh on the first carbon and also the carbon before ketone is 1st i dont understand

  • @hassanjunaid6496
    @hassanjunaid6496 2 года назад +1

    @45:56 Sir how did ye numbered compound Y??? *Carboxylic acid* got 1st en *ketone* got 2nd??? But how? 😭😫

  • @lifewkaju
    @lifewkaju 2 года назад +3

    this helps alottt. jazakAllah

  • @sarwatahmed8277
    @sarwatahmed8277 3 года назад +5

    Very well explained

  • @akagispeedstars
    @akagispeedstars 2 года назад +2

    Great explanation, thank you for the video!

  • @AM-2150
    @AM-2150 Год назад

    21:26 why did you use moles, shouldn't we calculate the partical pressure?

  • @alchemistryrevision739
    @alchemistryrevision739 3 года назад +2

    thank you
    this video is very use full

  • @zredge823
    @zredge823 2 года назад +1

    Don't actually have words to praise ur teaching style and explanation. So perfect.
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    .
    .
    p.s kindly tell why didn't u count wavenumber before 1500?

    • @LucidMindChem
      @LucidMindChem  2 года назад

      Below 1500 lies fingerprint region, Above 1500 to 4000 is functional group region.
      Most of functional groups can be identified from 1500-4000.

    • @zredge823
      @zredge823 2 года назад

      @@LucidMindChem okay, thanks Sir.

  • @이시간-x5o
    @이시간-x5o 3 года назад +3

    sir for question 19, can you please tell me which topic i could learn about ammonia salt reacting with NaOH? I find really really hard to figure out what the products are when two compounds react together. Do i just have to memorise all these reactions?

    • @LucidMindChem
      @LucidMindChem  3 года назад +3

      You can find these reactions in NITROGEN AND SULFUR chapter in Roger Norris Book

    • @cosmiceraser
      @cosmiceraser 3 года назад

      느금마 ㅋㅋ

  • @SKB05
    @SKB05 2 года назад +1

    Best in the wholr world.

  • @abhijay8939
    @abhijay8939 5 месяцев назад

    sir for question 10, arent we supposed to use partial pressure and not moles??

  • @SKB05
    @SKB05 2 года назад +1

    You re the best man

  • @andonmopax5365
    @andonmopax5365 Год назад

    hi sir! thank you for your clear explanation. In Q8 , where do you got those informations about the bond energy? will it provide in the exam? also in Q30, will the infra-red spectrum table provide in the real exam?

    • @LucidMindChem
      @LucidMindChem  Год назад

      Yes, information about values will be given in exams

  • @feelislam365
    @feelislam365 11 месяцев назад

    Which app do you use

  • @HoloClipsCh.
    @HoloClipsCh. 2 года назад

    In Q 35 , al2o3 becomes a complex ion in water and H+ is released…so will it not decrease the ph and make it slightly acidic?????

    • @LucidMindChem
      @LucidMindChem  2 года назад

      No Al2O3 doesn't dissolve in water.
      It is AlCl3 that dissolves to form complex and acidic solution.

  • @hamzarehman913
    @hamzarehman913 3 года назад +2

    legends few hours before paper

  • @muizfarhan4707
    @muizfarhan4707 3 года назад

    In Q.40 can't sulfuric acid oxidize an aldehyde? I know there aren't any direct reactions we have studied, but we know that sulfuric acid is an oxidizing agent, so can't it oxidize aldehyde to a carboxylic acid?

    • @LucidMindChem
      @LucidMindChem  3 года назад +4

      No we can't use only sulphuric acid. At higher levels you will come across aldehyde polymerisation reaction. e.g. Acetaldehyde polymerises in presence of mineral acids like HCl, H2SO4 and H3PO4. A cyclic trimer called paraldehyde (2,4,6- Trimethyl - 1,3,5 - trioxan) is formed.

  • @alishaghayas8232
    @alishaghayas8232 2 года назад

    sir, in qs 10 why r we using moles to calculate Kp and not partial pressures? plz help urgent

    • @LucidMindChem
      @LucidMindChem  2 года назад

      At constant temperature and volume the pressure of a gas is directly proportional to the number of moles of gas.

  • @xxaaaiii
    @xxaaaiii 2 года назад

    Sir for Q 20, for the 3rd and 4th chiral centers, if you add a hydrogen, wouldn’t that make it 5 bonds to the carbon atom instead of 4, shouldn’t there only be 4 bonds, for example in the 4th chiral center, the bonds are c=c, c-ch3 and c-ch2, that’s 4 bonds right?, why would there be another c-H bond?

    • @LucidMindChem
      @LucidMindChem  2 года назад

      After addition of Hydrogen there will no longer be double bonds, All bonds will become single covalent.

    • @xxaaaiii
      @xxaaaiii 2 года назад +1

      I understand now sir, thank you so much

  • @AbdulMuizprofile
    @AbdulMuizprofile 2 года назад +1

    sir can u plz upload more solved solutions of mcqs please for As

  • @qiqiliang7364
    @qiqiliang7364 11 месяцев назад

    in Q6 what is mean by " resistant to change shape" how can i konw it

  • @kimzozonyabi7324
    @kimzozonyabi7324 3 года назад +2

    Thank you🙏🏽

  • @jayziyc
    @jayziyc 2 года назад +2

    Thank you sir

  • @amnaamir9358
    @amnaamir9358 3 года назад +2

    Thank you!

  • @nurulsolehah6801
    @nurulsolehah6801 2 года назад

    Hi, thank you for the very useful video! May Allah bless you.
    I have a question regarding question 23, why isn't H free radical an answer?

    • @LucidMindChem
      @LucidMindChem  2 года назад +1

      H free radical is never formed in free radical substitution of alkanes instead HBr is formed.

    • @nurulsolehah6801
      @nurulsolehah6801 2 года назад

      @@LucidMindChem homolytic fission would only happen with the halogen molecule is it?

    • @LucidMindChem
      @LucidMindChem  2 года назад +1

      Yes

    • @nurulsolehah6801
      @nurulsolehah6801 2 года назад

      @@LucidMindChem thank you for the reply 😁

  • @izmakashif928
    @izmakashif928 3 года назад +3

    Thank you soo much, could you please solve 13 variant of this as wel? I'd be so grateful!

  • @cosmiceraser
    @cosmiceraser 3 года назад

    ok i just took 9701 w21 paper 13 rn its so fuckijng hard, even after solving past paper questions p13 was so cancerous

  • @fatimaabid9978
    @fatimaabid9978 2 года назад +1

    can u pleasee upload 2021 summer paper 13 @Lucid Mind

  • @tluci
    @tluci 3 года назад +1

    Thank you so much

  • @areebawarsi7051
    @areebawarsi7051 3 года назад +2

    thank you

  • @noorsaif8346
    @noorsaif8346 2 года назад +1

    thank u soo much

  • @amnabaig5988
    @amnabaig5988 2 года назад

    Hello sir do u give tutions?

    • @LucidMindChem
      @LucidMindChem  2 года назад

      Yes i do
      Contact: Whatsapp only
      +92 342 0722062

  • @rumaisasiddiqa9638
    @rumaisasiddiqa9638 2 года назад +1

    are you from pakistan.....?

    • @LucidMindChem
      @LucidMindChem  2 года назад +2

      Yes, indeed.

    • @rumaisasiddiqa9638
      @rumaisasiddiqa9638 2 года назад +4

      @@LucidMindChem ok great to see such innovative teachers in our country😊😊 .....I am just learning chemistry from your videos since the whole day today....just discovered you today

    • @muhammadzainwatto4026
      @muhammadzainwatto4026 2 года назад +3

      @@LucidMindChem you know what am just so interested to know bout you... 🙃
      I mean.. things like your age.. city.. education... whether you did O/A level or sth else... en more stuff like that
      how bout you make a video on this🥺
      plzzzzzzz plzzzzz plzzzzz
      am sooooo curious🥺🙏🏽🙏🏽
      p.s. plz do tell, at least, whether or not you'll consider this request.. will b waiting😌
      AND BTW WHY NOT???🥺🥺

  • @bestmemoriessible8811
    @bestmemoriessible8811 2 года назад +1

    Please solve October November 17

  • @noshinmourin8518
    @noshinmourin8518 3 года назад

    Plz do 15 and 17 too

  • @chandrakantoza656
    @chandrakantoza656 7 месяцев назад

    Captions remove

  • @vilohith9076
    @vilohith9076 2 года назад +1

    thanks sir

  • @hengwaiwong6815
    @hengwaiwong6815 2 года назад +1

    thank you

  • @iqrakanwal4280
    @iqrakanwal4280 2 года назад +1

    thank you