DP Chemistry (last assessment 2024)
Question 18M.2.sl.TZ2.c.iv
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.2.sl.TZ2.c.iv |
| Level | sl | Paper | 2 | Time zone | TZ2 |
| Command term | Deduce | Question number | c.iv | Adapted from | N/A |
c.iv.
[Maximum mark: 1]
18M.2.sl.TZ2.c.iv
The structure of an organic molecule can help predict the type of reaction it can undergo.
Improvements in instrumentation have made identification of organic compounds routine.
The empirical formula of an unknown compound containing a phenyl group was found to be C4H4O. The molecular ion peak in its mass spectrum appears at m/z = 136.
Deduce the formula of the unknown compound based on its 1H NMR spectrum using section 27 of the data booklet.
[1]
Markscheme
C6H5COOCH3 «signal at 4 ppm (3.7 – 4.8 range in data table) due to alkyl group on ester
[1 mark]
