May 10 Chemistry Paper 1 & 2

[TNT]

Does anybody remember the polar question in the paper 1, was it asking for which of these are polar or non-polar? Was the answer like BrCl3 or something can't remember? Anyone remember? I need some reassurane for my paper 1?

[IBer_101]

Usually, there are a few common questions between SL and HL in Group 4 subjects.

Edited May 15, 2010 by IBer_101

[tdubthebassist]

it was A. But I don't remember what it was. something like CH2Cl2

[TNT]

Does anyone remember whether the question on knowledge of polar atoms, was asking for the polar molecule or non polar molecule in paper 1?

[tdubthebassist]

Does anyone remember whether the question on knowledge of polar atoms, was asking for the polar molecule or non polar molecule in paper 1?

CH2Cl2... or whatever. it was A

[TNT]

What was the ligand in the multiple choice, was it A as well?

[tdubthebassist]

What was the ligand in the multiple choice, was it A as well?

something like CN-?

[TNT]

yess

[TNT]

How was the periodic table set out? in paper 2 question

Edited May 15, 2010 by TNT

[narathiel]

atomic number.

[tdubthebassist]

How was the periodic table set out? in paper 2 question

atomic number is the correct answer.

Can you please put your questions into 1 whole lists so that you do not have to put '1 line' posts every time?

Thank you

[Nikki02]

I hated those papers... We were screwed already, because of our teacher. He didn't know how to teach an IB class. Anyway, I tried my best to get enough points together, but our entire class was like whaaaat?! Do you guys think the grade boundaries will be okay for SL? I was TZ1... man, i feel bad about those papers.. .

[Tilia]

I think P1 was ridicously easy, think I might get full marks on that one. But P2 was so hard! None of those easy equilibrium/energetics/kinetics questions. At least most people seem to be of the same opinion, so the boundaries shouldn't be too strict, I hope.

Did anyone do the last questions on section B TZ2, the organic chemistry one? They asked for a reaction where HBr is eliminated, but there are more than one of those! I wrote the substituion with ammonia, do you think that's OK? Another guy in my class took a different one.

[tdubthebassist]

I think P1 was ridicously easy, think I might get full marks on that one. But P2 was so hard! None of those easy equilibrium/energetics/kinetics questions. At least most people seem to be of the same opinion, so the boundaries shouldn't be too strict, I hope.

Did anyone do the last questions on section B TZ2, the organic chemistry one? They asked for a reaction where HBr is eliminated, but there are more than one of those! I wrote the substituion with ammonia, do you think that's OK? Another guy in my class took a different one.

it said elimination of HBr. So what they were actually asking was elimination (either E1 or E2) of H and Br. So you use NaOH (warm) aqueous solution to take off H and then Br is taken off.

[IBer_101]

I think P1 was ridicously easy, think I might get full marks on that one. But P2 was so hard! None of those easy equilibrium/energetics/kinetics questions. At least most people seem to be of the same opinion, so the boundaries shouldn't be too strict, I hope.

Did anyone do the last questions on section B TZ2, the organic chemistry one? They asked for a reaction where HBr is eliminated, but there are more than one of those! I wrote the substituion with ammonia, do you think that's OK? Another guy in my class took a different one.

it said elimination of HBr. So what they were actually asking was elimination (either E1 or E2) of H and Br. So you use NaOH (warm) aqueous solution to take off H and then Br is taken off.

I didn't do that question. But if you want to eliminate HBr from a halogenoalkane, you use a hot alcoholic solution (in ethanol) of NaOH, not an aqueous solution.

Unless you guys are talking about something else.

[Tilia]

I think P1 was ridicously easy, think I might get full marks on that one. But P2 was so hard! None of those easy equilibrium/energetics/kinetics questions. At least most people seem to be of the same opinion, so the boundaries shouldn't be too strict, I hope.

Did anyone do the last questions on section B TZ2, the organic chemistry one? They asked for a reaction where HBr is eliminated, but there are more than one of those! I wrote the substituion with ammonia, do you think that's OK? Another guy in my class took a different one.

it said elimination of HBr. So what they were actually asking was elimination (either E1 or E2) of H and Br. So you use NaOH (warm) aqueous solution to take off H and then Br is taken off.

But in an E2 or E1 reaction, H20 is eliminated, not HBr