Higher Chemistry 2012 Discussion

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Thanks for uploading the answers. I'm not quite sure how I did - looking at the Section B I think I have done fairly well but I can't remember Section A at all.

Does anyone have a link to the PDF of the paper? Or can someone kindly scan in the five multiple choice pages? I will buy you an Irn-Bru :tongue:

They're already on page 26, 27 and 28

Reply 681

n00b/

see for the question that asked you to draw a dotted line to show hydrogen bonding, i drew a dotted line between a H and an O instead of a H and a N - will i get the mark?

Reply 682

bethm95

Original post by Tara I

How many marks was 15 b) ii) worth, anyone?

I have the paper here, its just one mark

Reply 683

Charliepringle

hey thanks for the answers for section B, but i have a few questions if you wouldnt mind answering:

2.b)ii) how do you do it

5.a) why can't you do Vm= V/n as you know V is .110 L from the graph and you know the molar volume as it is given to you?

9.c) What part is "the head"

11.b)ii) how did u get that?!

If anyone could help that would be great, these are replies to MIMX's answers

Reply 684

Kaaal

Original post by n00b/

see for the question that asked you to draw a dotted line to show hydrogen bonding, i drew a dotted line between a H and an O instead of a H and a N - will i get the mark?

Hydrogen bonding occurs between Hydrogen and Oxygen as well as Nitrogen, so yeah I'm pretty sure!

Reply 685

pepperss

Original post by Kaaal

Can someone explain to me how 3.a) is 0.125 moles?

I found Eh ( 4.18 x 500/1000(mass of water) x 82(rise in temperature) = 171.38kj
I then rearranged the triangle/formula Combustion = Eh/n into Eh=n x Combustion so to find n using this formula you would take Eh and divide it by combustion value = 171.38/1367 (given in question) = 0.125moles

(edited 11 years ago)

Reply 686

Blue7195

SERIOUSLY hoping that these are the same as the SQA marking scheme, because i get an A, but scrape it! here's a' hoping!

Reply 687

Kaaal

Original post by Blue7195

SERIOUSLY hoping that these are the same as the SQA marking scheme, because i get an A, but scrape it! here's a' hoping!

Same! What percent did you get?

Reply 688

Blue7195

Original post by Kaaal

Same! What percent did you get?

72%! you? however a few qu's I just marked as 0 because i couldn't see the marks, so (hoping) get a few half marks here and there too!

Reply 689

daisyclouds

Hope everyone did well in this exam :smile:

i did a few stupid mistakes :frown:

but overall not bad? i feel like i'll get penalized for some of the things i wrote down though :frown:

Reply 690

Kaaal

Original post by Blue7195

72%! you? however a few qu's I just marked as 0 because i couldn't see the marks, so (hoping) get a few half marks here and there too!

71%

last year you needed 69%.. so i wonder how this year compares :P I did the same as you, no half marks, and just marked it at 0 if there was any doubt

Reply 691

Blue7195

Original post by Kaaal

71%

last year you needed 69%.. so i wonder how this year compares :P I did the same as you, no half marks, and just marked it at 0 if there was any doubt

mainly did it so i could make myself feel better haha! i feel last year was a bit easier, some really horrible questions this time round, so hopefully it stays at 69% !

Reply 692

Emma Gray

Original post by n00b/

see for the question that asked you to draw a dotted line to show hydrogen bonding, i drew a dotted line between a H and an O instead of a H and a N - will i get the mark?

Yeh, you will!

Reply 693

Kaaal

Original post by Blue7195

mainly did it so i could make myself feel better haha! i feel last year was a bit easier, some really horrible questions this time round, so hopefully it stays at 69% !

Yeah! :P I'm really anxious to get my results now... I know that if I get a B in chemistry, i'll have just missed out on A, how gutting!

Reply 694

mimx

Best case scenario I got 97%, worst probably about 91%.

Now watch me get 50% for being too confident. :frown:

Reply 695

Emma Gray

Does anyone have the questions?

Reply 696

n00b/

77% give or take a few marks, thank you for uploading those solutions!

Reply 697

Kaaal

Original post by mimx

Best case scenario I got 97%, worst probably about 91%.

Now watch me get 50% for being too confident. :frown:

Any chance you could post how many marks each question is worth? The pictures dont show it sometimes

Reply 698

OpenArms

for 15)b)ii) I never included stage 3, I thought you didn't need to include it as it wasn't really part of the reaction? I thought they were trying to trick us :frown: