DP Chemistry (last assessment 2024)
Question 18M.3.sl.TZ2.a
| Date | May 2018 | Marks available | [Maximum mark: 1] | Reference code | 18M.3.sl.TZ2.a |
| Level | sl | Paper | 3 | Time zone | TZ2 |
| Command term | Deduce | Question number | a | Adapted from | N/A |
a.
[Maximum mark: 1]
18M.3.sl.TZ2.a
One method of producing biodiesel is by a transesterification process.
Deduce the equation for the transesterification reaction of pentyl octanoate, C7H15COOC5H11, with methanol.
[1]
Markscheme
C7H15COOC5H11(l) + CH3OH(l) → C7H15COOCH3(l) + C5H11OH(l)
OR
C13H26O2(l) + CH4O(l) → C9H18O2(l) + C5H12O(l)
OR
Accept correct equation in any format eg, skeletal, condensed structural formula, etc.
Accept equations with equilibrium arrow.
[1 mark]
