http://papers.xtremepapers.com/CIE/...d AS Level/Chemistry (9701)/9701_w05_qp_1.pdf
Do you know how to do (3) and (17) in oct/nov/o5?
Do you know how to do (3) and (17) in oct/nov/o5?
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Please help me with the questions below..
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s12_qp_11.pdf
Question no. 16, 21, 28
I'll appreciate an explanation.. thanks!
Helloo!Hey salvatore! How are your papers going mate? I hope you are doing well!
No. 16 C .. in Cl2 it's 0.. then in ClO^- it will be Cl+(-2)=-1 Oxidation no of Cl=+1
so the change is from 0 to 1 .. +1 change.
No 21 C
An organic compound J reacts with sodium to produce an organic ion with a charge of –3... Means it has 3 -OH groups.
J reacts with NaOH(aq) to produce an organic ion with a charge of –1... meaning it has 1 -COOH group which reacts with NaOH.
So 2 OH groups and 1 COOH group. which is only available in C.
No. 28 No Clue! I thought the answer was C but that's wrong I need help in this one!
please explain this anyone View attachment 28077
Helloo!
My papers are going on well bruv.. just left with two multiple choice papers.. then party time!!
Hope yours are going on well too..
No. 16.. *punch me in the face* I was thinking of something else.. it was so simple.
No. 21.. perfectly understood.. thanks!
No. 28.. I'll let you know if I find any solution for that, please do the same if you get the answer.
Thanks a lot
1 And 2 only.. so B?
Since with 1 .. Ammonia plus alkali gives.. Ammonium salt.. (2 NH3 + 3 CaO = Ca3N2 + 3 H2O .. the equation isn't in course) YOU JUST NEED TO KNOW THAT CaO is a base.
With 2.. P4O10 is not acidic without water... and undergoes the reaction.. P4O10 + 4 NH3 + 3 O2 = 4 NH3PO4
With 3 however.. H2SO4 and NH3 being acid and base will undergo nuetralization reaction instead getting dried.. So 3 Is incorrect. And answer is B.
Haha Alhamdullilah My papers are going fine as well Now just need to score 32+ in both Chem and Phy MCQs (INSHALLAH) and be done with AS!
No worries mate.. that happens sometimes.. yea I will let you know if I find answer for 28.
Its B for q28..What I know is that SN2 reactions always occur in one step...the rest of reactions occur in 2 stepsPlease help me with the questions below..
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s12_qp_11.pdf
Question no. 16, 21, 28
I'll appreciate an explanation.. thanks!
I also thought the same but MS says its D
If you get the answer do tag me. I kinda guessed the answer but don't know the correct working for it...!
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