Thank you sir for all your help in phy chsm and bio. You are the reason i got all A's in my As level and the reason i will get all A* in my A levels.❤️
Bro, I need help 😭 my AS in April 2024 I just tried this paper and I scored 20. I am hella scared. How improve my grade bro, its only with chem not any other sub.
@@VIMAAL_RAJ_1006 bro just focus on solving past papers while looking at the ms so you start to realise how to answer questions. You can do it and practice confidently.
@@prithvihebbar thanks bro now I am planning to do more topicals for paper 1. My paper is not bad I score 40s/60 So gotta focus more on paper 1 And also bro any yt channel or online notes website or notes do you suggest to improve?
48:51 The sructure that you have drawn for C2H2Cl2 is incorrect. It's 1,2-dichloroethene, whereas, you have drawn 1,2-dichloroethane. Thank you sir! Your videos are really helpful
Sir, i appreciate your work a lot ! But the maths explanations are a bit complicated, could you simple it down for future vids, it would be more helpful to students. Thanks!
where are you becoming a doctor? PS: your videos help a lot! thanks! A concept I couldn't understand from my teacher is explained simply by your videos!
for *QUESTION 2 OPTION B* -"The covalent bond in a fluorine molecule is weaker than the bond in oxygen molecule" I know it is wrong but can u explain the reason why fluroine molecule bond is weaker than that of oxygen?
if pressure is indirectly proportional to volume, are you sayng decreasing the pressure will make our syringe expand. and increasing the pressure will make it shrink????
Look at all the reactions systematically from equation 1, to stage 1, to stage 2, to stage 3, you eventually get from NH3 in the beginning to HNO3 in the end. So you can form like a Hess cycle but with 1 extra equation added into it.
Thx for the rly helpful explanations for some qns I was confused on! 😁 Could you pls explain why in qn17 option 2 (increasing p by adding HI & constant volume) is right? I understand that u used the logic that option 1 is rly wrong hence by elimination the answer must be D, but does 2 actually make sense? (considering it favors the backward reaction)
thats what I thought too, but im still a bit confused on how option 1 is wrong, if you increase pressure but maintain constant volume, shouldnt temperature and thus K.E of hydrogen and iodine increase leading to more effective collisions and increases forward rate of reaction?
@@zats7110 Increasing the pressure wouldnt only increase the rate of forward rection but it would increase the rate of backward reaction as well and the equilibrium would not shift towards any side as number of gaseous moles are equal on both sides Hope this Helps .
@@zhar9177 but how does pressure affect backward rate of reaction since the RHS only contains HI and not any other molecules for HI to collide and react with? Isnt it the temperature which is mostly determining the rate of backward reaction
thats what I thought too, meaning there would be more effective collisions between H2 and I2 molecules and this increase the forward rate of reaction, but im very confused
The means by which they're decreasing the pressure aint right in the first option.... So it doesn't apply there... While in the second option it does apply
I love these explanations so much - its going to sound a bit weird but it was nice going through this today after having a rather difficult Maths lesson that didn't make me feel too well - what can I say I grow attached to a lot of the cambridge-youtubers voices haha😅
You use the limiting reactant when doing calculations, so he used moles of HCl, then he used mole ratio to find moles of CO2 which was (0.025), then since question states "at room conditiions" we can use n = v/24 , rearranging we n*24=v v = 0.025 * 24 = 0.6 dm^3
the repeat units in polyethene are sp3 hybridized since each carbon only forms sigma bonds but in ethene, they are sp2 hybridized since the carbons in ethene consist of 3 sigma and 1 pi bond each.
![Wolfram Physics Project: Working Session Tuesday, Aug. 4, 2020 [Empirical Physical Metamathematics]](/img/n.gif)
Thank you sir for all your help in phy chsm and bio. You are the reason i got all A's in my As level and the reason i will get all A* in my A levels.❤️
Bro, I need help 😭 my AS in April 2024 I just tried this paper and I scored 20. I am hella scared. How improve my grade bro, its only with chem not any other sub.
@@VIMAAL_RAJ_1006 bro just focus on solving past papers while looking at the ms so you start to realise how to answer questions. You can do it and practice confidently.
@@prithvihebbaris there still time to improve the grades in paper 1 ?!?!?!
@@rimasasmr614 yes
@@prithvihebbar thanks bro now I am planning to do more topicals for paper 1. My paper is not bad I score 40s/60
So gotta focus more on paper 1
And also bro any yt channel or online notes website or notes do you suggest to improve?
Congrats On Becomming a Doctor Soon InshaAllah
Im so glad the boundaries are at only like 26-28 for an A.
Isn't it 34 to 36
@@ebcricket3922 Nah, that's probably how much you need for 97 pum.
Bro I'm getting barely getting 20😭💀
Lmao I never got past 30 marks in this paper. I’m fucked for tmr’s paper
The threshold is 26 about
48:51 The sructure that you have drawn for C2H2Cl2 is incorrect. It's 1,2-dichloroethene, whereas, you have drawn 1,2-dichloroethane. Thank you sir! Your videos are really helpful
question 32, 48:42 you drew the c2h2cl2 as c2h4cl2, which is possible but c2h2cl2 isnt
thank you for pointing that out.. I was confused at the first glance
Sir, i appreciate your work a lot ! But the maths explanations are a bit complicated, could you simple it down for future vids, it would be more helpful to students. Thanks!
where are you becoming a doctor? PS: your videos help a lot! thanks! A concept I couldn't understand from my teacher is explained simply by your videos!
for *QUESTION 2 OPTION B* -"The covalent bond in a fluorine molecule is weaker than the bond in oxygen molecule" I know it is wrong but can u explain the reason why fluroine molecule bond is weaker than that of oxygen?
Because oxygen has a double bond
if pressure is indirectly proportional to volume, are you sayng decreasing the pressure will make our syringe expand.
and increasing the pressure will make it shrink????
53:30
C can be oxidised to carboxylic acid no? The alcohol group below can be oxidised?
48:50 isnt the structure you drew here wrong? you drew C2H4Cl2 not C2H2Cl2 like the question says
Why are we adding all the enthalpy values in Q11?
Look at all the reactions systematically from equation 1, to stage 1, to stage 2, to stage 3, you eventually get from NH3 in the beginning to HNO3 in the end. So you can form like a Hess cycle but with 1 extra equation added into it.
@@rubennishwaraankaruppiah3707 Thank you :)
@@wadiahirfan5311 No Problem :D
Thx for the rly helpful explanations for some qns I was confused on! 😁
Could you pls explain why in qn17 option 2 (increasing p by adding HI & constant volume) is right? I understand that u used the logic that option 1 is rly wrong hence by elimination the answer must be D, but does 2 actually make sense? (considering it favors the backward reaction)
thats what I thought too, but im still a bit confused on how option 1 is wrong, if you increase pressure but maintain constant volume, shouldnt temperature and thus K.E of hydrogen and iodine increase leading to more effective collisions and increases forward rate of reaction?
@@zats7110 Increasing the pressure wouldnt only increase the rate of forward rection but it would increase the rate of backward reaction as well and the equilibrium would not shift towards any side as number of gaseous moles are equal on both sides
Hope this Helps .
@@zhar9177 but how does pressure affect backward rate of reaction since the RHS only contains HI and not any other molecules for HI to collide and react with? Isnt it the temperature which is mostly determining the rate of backward reaction
54:40 why doesnt this take place?
In question 17 by increasing the pressure and keeping the volume constant wont the temperature change which would increase k.e of particals??
thats what I thought too, meaning there would be more effective collisions between H2 and I2 molecules and this increase the forward rate of reaction, but im very confused
@@zats7110 exactly this q makes no sense
@@glo457 You need to keep in mind that both rate of forward and backward reaction increases not only the forward reaction
@@zhar9177 okay but the last part, decreasing volume, how would that have any change?
The means by which they're decreasing the pressure aint right in the first option.... So it doesn't apply there... While in the second option it does apply
I love these explanations so much - its going to sound a bit weird but it was nice going through this today after having a rather difficult Maths lesson that didn't make me feel too well - what can I say I grow attached to a lot of the cambridge-youtubers voices haha😅
thank you
Why couldnt we use naoh in ethanol for 33
Could you please upload 2022 October paper 2
32:21 doesnt number 2 adding more hydrogen iodide support the backwards reaction or something? wont it decrease the forward rate instead?
Exactly, it makes no sense
Yeah
Backward rate is increased to counteract for increase in HI, therefore more reactants made which in turn will speed up rate of forward reaction too.
Can you solve physics and chemistry p4 for A2 they are kinda confusing
Will be uploading soon
hiii pls post paper 22 as soon as u can :) tysm!
I will try!
In question 4 I did not understand the last step can you clarify it pls
You use the limiting reactant when doing calculations, so he used moles of HCl, then he used mole ratio to find moles of CO2 which was (0.025), then since question states "at room conditiions" we can use n = v/24 , rearranging we n*24=v
v = 0.025 * 24 = 0.6 dm^3
@@an5i910 thank youu
Sir, for ques 6 at 12:40 can you plz explain why d is wrong
the repeat units in polyethene are sp3 hybridized since each carbon only forms sigma bonds but in ethene, they are sp2 hybridized since the carbons in ethene consist of 3 sigma and 1 pi bond each.
I didnt understand question 8
oxygen is in excess, so we also need to consider the amount of oxygen too
30 is b in ms
hii can u upload oct nov 2023 paper 11
Soon 👀
Yo no way you are from bangladesh? Im too!
Yes i am!
Straight outta Dhaka
@@CAIEPapersSolved No wayyy me too
@@CAIEPapersSolved Apni Dhakai thaken???
Yes boss
@@CAIEPapersSolved pleaseeeeee upload feb mar 2024 p1😭😭👍
34 is b in ms
its C wth
10:30 what is 24 😭😭
1 mole of a gas occupies 24 dm cube. So I used that and multiplied by the no of moles of gas.
Can somebody pls gove me a the formulas i need to know for pv=nrt
Wdym isn't pv=nrt already a formula?
@@idkname007 hii yes I mean yk when we need to change it like when we need to find out volume or pressure if yk what i mean
@@rimasasmr614 do you mean the units or the rearranging the formula ?
pressure in Pa
volume in m^3
Temperature in K (which is the temperature in degrees + 273)
edit: and mass in grams