| Date | May 2010 | Marks available | 3 | Reference code | 10M.3.sl.TZ2.D1 |
| Level | SL | Paper | 3 | Time zone | TZ2 |
| Command term | State | Question number | D1 | Adapted from | N/A |
Question
State the differences between the structures of morphine and diamorphine (heroin). State the names of all functional groups in the molecule of morphine.
Differences:
Functional groups:
Markscheme
Differences:
(two) hydroxy(l)/alcohol and phenol groups are esterified/replaced with ester/ethanoate/acet(yl)oxy groups / OWTTE;
Accept formulas instead of group names.
Functional groups:
hydroxy(l)/alcohol/phenol;
ether/oxa;
(tertiary) amine/amino;
double bond/alkene;
aromatic/benzene ring/phenyl/aryl;
Examiners report
Many candidates were able to identify the differences in the structures of morphine and diamorphine, but in the second part of the question quite a number of candidates gave the formula of the functional groups rather than their names, as required by the question.
