OCR AS - Chemistry Unit F322 - Chains, energy and resource - REVISION!

Yes, thats what I wrote. but methylated spirits are solvents, which was mentioned in the question? I think.. Feel freee to correct me. In fact, PLEASE correct me :P

For the last part will there be marks for the fragment ions that I found? even though i got the propanoic acid wrong

Yes, thats what I wrote. but methylated spirits are solvents, which was mentioned in the question? I think.. Feel freee to correct me. In fact, PLEASE correct me :P

Guys, atom economy is more important, making CO2 in the reaction which contributes to global warming is a bigger compromise than if yield of ethanol is lower

I put exactly what you put, and it made sense to me. I wrote something like with fermentation, you will always get CO2 produced, therefore the atom economy will never be 100%. Also, in the production of ethanol it is more important to have a good percentage yield (ie: high efficiency of converting reactants into products) because this will enable a high yield of ethanol, which is wanted in industrial production.

I worked out and wrote the formula of propanoic acid right but i wrote it was ethanoic acid by mistake because in was rushing. How many marks would I lose?

What a ridiculous paper for a chemistry exam.
Why bother revising half the theoretical (interesting) stuff when they're going to throw a bunch of essay style questions about sustainability and the environment, which was a tiny part of the syllabus.
I really need an A in this paper, and don't know if I got it because I know i messed up the radical question (didn't know NO2 was a radical) and missed a 1 or 2 marks on the last question (had a silly moment and did the empirical formula for X wrong - still got it right overall though)
It now just depends on if they deem my paragraphs on sustainability and "international co-operation" correct (hardly shows skill at chemistry).

The atom economy and % yield question of making ethanol... You could of said either. As long as you explained why you thought whatever reason you put

but you could find a use for the co2 making it more sustainable in a sense - it can be argued that way

Hmm, what wrong question?

for the one where you had to draw the stuff out of the cyclic compound

first when u add H2 did u jus draw the same thing without a double bond ?

and then for the other ones when u add HBr did u just draw it out but add a bromine and then for the second product did u jus move the position of the bromine ?????????

Yes, it can be argued either way, that's the point, it said in the question "Explain which one you believe is the most important"