OCR A2 CHEMISTRY F324 and F325- 14th and 22nd June 2016- OFFICIAL THREAD

What are the chances of us being tested on organic practical methods? I know we get tested on them via. the controlled assessments, but is it possible for them to ask us to describe the method of purifying etc?

For reduction of ketones/carboxylic acids, if you use NaBH4, is there a colour change from orange to green as well?

I doubt they would..

Anyone know for sure?

Oh, duh. Just want to make sure it's the rifht one:


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Yep, it's that question and the one on the very left. 😀 I would've put it as 3 separate peaks not as one multiplet so I was a bit confused.

Oh, duh. Just want to make sure it's the rifht one:


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Lol I mixed them up too. I thought the 2.7 was the first one.

Just a Question. does the most left one have any splitting pattern? I couldn't figure it out. I left it at the end and filled it out and got it right but those ****ing jaggy ass lines are hard to read.

if you ever see a 'mess' at 7ppm, it is screaming at you that it is a benzene ring.

If You look on the chemistry data sheet there is notes at the bottom which say that the peaks due to OH and NH bonds are said to be normally singlets and are BROAD. - therefore you'd know if it was a benzene or a OH/NH.

if you ever see a 'mess' at 7ppm, it is screaming at you that it is a benzene ring.

If You look on the chemistry data sheet there is notes at the bottom which say that the peaks due to OH and NH bonds are said to be normally singlets and are BROAD. - therefore you'd know if it was a benzene or a OH/NH.

if theres an carboxylic acid or aldehyde or ketone im the compound will a (CH-O) at 3.5 ppm show as well?


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That peak will only be in esters and alcohols, and will show whether its in D2O or not!

This specification point 'Describe and explain the increased use of esters of fatty acids as biodiesel'

What does it want us to know?

f324 2015:

The markscheme for the F324 June 2015 paper, says (hot) ethanol ammonia for question 3aiii. But I put ethanolic ammonia, warm and my teacher has marked it right. Do you think this is okay, or should I stick with hot ethanolic ammonia???

Does anyone know if our spec covers that fact that from CN to COOH is a hydrolysis reaction?

'Explain the term retention time, and interpret gas chromatograms in terms of retention times and the approximate proportions of the components of a mixture'

What does the second part mean, about the approximate proportions?