A2 OCR Chemistry B F334 - June 2015

it was the first tri that on the IR as no 0H group was shown so it was the other molecule without OH

My logic was that in the tri all the hydroxyl groups underwent esterification. In di 1 group didnt. no OH led me to believe it was tri

Im pretty sure it was tri.....loads of ppl got tri :/

But It did have an OH group?
At wave number: 3600-3640

Hmm. Was it a isolated molecule or a polymer?

Isolated

It was a small peak but it was still there?

Well it's the first year in which the government has lifted the cap on the number of students universities are allowed to enrol on their courses without facing financial penalties.

Are you talking about G494?

So was it tri or di

To be honest, the only think biology helped me with is developing my answer in the DNA replication bit. The bonds between the bases - I learnt that through the CGP book for chemistry!

Hey eggy what did you think?

Well I stepped out of the exam hall thinking it was okay.

And then I entered some website call www.thestudentroom.co.uk which basically changed my whole view point.

I'm dead.

How did you find it?

I actually thought it was okay/decent and yes! I know everyone here is like 'it was ****, lets blow up OCR HQ' but I didn't think it was that bad certainly better than last years one that's for sure!

Are you revising for F335 now?

This is a long shot, but for the observations question in the vanadium part (adding sodium hydroxide to the h2so4 and alloy mixture), where you had to write colours, I wrote:
Before: Universal indicator is red as it is a strong acid.
After: Universal indicator turns green as the sodium hydroxide neutralises the acid.

Any marks do you think? Not expecting any myself.

Where even was this question?! Great another question I've missed out :'