For the PV=nRT question, id someone get somewhere around 304? im not sure if thats correct. The answer i got was 3..4 i cant remember the middle number.
I had 1 minute left in the exam to finish 2 questions so had to rush the equations for NO atmosphere question and yield(?) equation. I think I did them both wrong though lmao I put random equations and just numbers
for the analytical techniques I got butanoic acid, not methylpentanoic acid I found a mz+ (or something) and got C3H5+ from my butanoic acid and just registered it as that. There wasn't an indication that it had a methyl group was there? I put: found formula m/z = 88 molecular mass = 88 (question said final line was due to carbocations) absorption peaks etc drew butanoic acid found a mz+ to help prove it's butanoic acid and then rush off for a different question for the last minute
on the left it said mr peak 43 was a secondary carbocation so it cant be butanoic acid cause that would be a primary carbocation xx
Different fragments can be produced from butanoic acid, and one of them is the propyl ion. If the carbon in the middle of the propyl is ionised, that's a secondary carbocation (it would have two alkyl - methyl - groups attached)