OCR B F335 - Chemistry by Design - 13th June 2012

The formula was C6H8O4. so i don't think yours has enough carbon?

Could you explain which question this is? Panicking I don't recognise it at all...

What a horrific paper. Everyone I've spoken too struggled and found it very hard, so the grade boundaries are likely to be pretty low. Even so, horrible paper. And what's more, there was no buffer question which is usually a five marker, the benzene question was confusing, there was no Hsystem/Hsurroundings question...

Waste of revision for the most part, and I worked so hard for that paper too.

Did anyone put sulphonic Acid for one? I think it was a 'name this compound' or something?

Im worried now wether i put -38 or +38 for the delta H solution. I really need to look at this paper tomorrow now just to put my mind at rest. On some of the questions i think (and hope) that i have somehow fluked the answer like on the concentration of nitrogen one, and the colour of the gas. There are loads of places where i have dropped silly marks. Was there a question about a conjugate acid/base after the notrating mixture equation one?

It was hydrogen sulfate..

What was the percentage yield question?

I did 9/15 :s

i got hydrogen sulfate

I too found some hope in the fact that the grade boundaries would be lower... however, as Montstar correctly implied, the boundaries wont fall significantly enough to compensate the lost marks in an exam this confusing... shame... i was looking forward to going Cardiff...

What did you get for the percentage yield? I know its only 2 marks lol but its really annoying me D:

I know thats my first choice too...

I too found some hope in the fact that the grade boundaries would be lower... however, as Montstar correctly implied, the boundaries wont fall significantly enough to compensate the lost marks in an exam this confusing... shame... i was looking forward to going Cardiff...

i think i got 78% or something like that

How did you work it out?