DP Chemistry (last assessment 2024)
Question 18N.2.hl.TZ0.b.ii
| Date | November 2018 | Marks available | [Maximum mark: 1] | Reference code | 18N.2.hl.TZ0.b.ii |
| Level | hl | Paper | 2 | Time zone | TZ0 |
| Command term | State | Question number | b.ii | Adapted from | N/A |
b.ii.
[Maximum mark: 1]
18N.2.hl.TZ0.b.ii
Carbon dioxide contributes significantly to global warming. It can be used as a raw material with methyloxirane to form polymers.
State, giving a reason, whether methyloxirane can form cis-trans isomers.
[1]
Markscheme
no AND only one «axial/methyl/CH3» substituent «at the ring»
OR
no AND two «axial» substituents required «for cis/trans-isomers» ✔
Accept “no AND «O in the ring and» one carbon has two H atoms”.
