| Date | November 2010 | Marks available | 1 | Reference code | 10N.3.hl.TZ0.F5 |
| Level | HL | Paper | 3 | Time zone | TZ0 |
| Command term | Describe | Question number | F5 | Adapted from | N/A |
Question
The structure below shows –(l)-carvone.
–(l)-carvone has another optical isomer.
State its name and, by means of a diagram, predict its structure.
[2]
a.
Describe the structural feature of the carvone molecule that allows it to exist as optical isomers.
[1]
b.
Markscheme
Name:
+(d)-carvone/s-carvone/(+)-(S)-carvone / dextro-carvone;
Structure:
;
a.
asymmetric/chiral carbon / OWTTE;
b.
Examiners report
This question was reasonably well answered.
a.
This question was reasonably well answered
b.
Syllabus sections
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