2014 Chemistry Exam Solutions

[Brunette15]

I did the same as you

Yeah i did this too

[umirinbrah]

For question 7b) I listed the actual side chains instead of naming the amino acid. Will I still get marks?

[thushan]

Wouldn't the oxygen produced from CuO -> Cu + O2 be able to react with the carbon contamination?

Smart. That could be true, yes.

[bentennason]

For question 7b) I listed the actual side chains instead of naming the amino acid. Will I still get marks?

Probz not

[Chalkhous]

No answer to question 12 yet?

[amyhere]

Does anyone know what the exact questions for 4a was or even have a screenshot/photo?  Because I don't remember seeing any questions before the x/y one... woops.

EDIT: Don't worry, I found the scanned copy.  I definitely didn't see the question, but I'm hoping I might have done it anyway?

[2NE1]

does anyone know where a copy of the Chemistry exam can be located? Thanks

[felix-onea]

for question 10a and 11a, can the OH- and H+ be left out since they are spectators to the reaction?
or are they not spectators

[d4m0]

does anyone know where a copy of the Chemistry exam can be located? Thanks

2014 Exam paper

[2NE1]

did anyone realise VCAA didn't put + or - for Q1 short answers for the delta H?
I forgot to say delta H= +92.4 kj mol-1
I just put delta H=92.4 on the graph, do you think they will take a mark off for that?

[smartypants234]

Probz not

But some parts specifically asked for side chains.....

[RKTR]

But some parts specifically asked for side chains.....

yea i remember there were 2 that asked for side chains so i wrote the side chains for those

[jp96]

hmm i didnt notice that two required "side chains" only... i guess it depends on how VCAA determine the marking scheme - but i'd assume that writing the name of the acid in those cases (instead of the side chain) would be wrong

[skybluemaniac]

Guys i'm really confused about question 6 mc answer. I thought it was a weak acid added to a weak base, because the PH levels out at 2..and doesn't decrease even after you add excess acid. If it was HCL wouldn't it decrease to around 1?

[2NE1]

Could you say KOH was a catalyst, speeds up the reactions for Question 10.
I know it is an electrolyte, I don't even know why I didn't write that in the first place but I couldn't be bothered explaining the exchange of OH- between the anode and cathode. I'll probs lose a mark for saying its a catalyst LOLL but nothing in the question suggests it can't be.