DP Chemistry (last assessment 2024)
Question 19N.2.sl.TZ0.3d(i)
| Date | November 2019 | Marks available | [Maximum mark: 2] | Reference code | 19N.2.sl.TZ0.3d(i) |
| Level | sl | Paper | 2 | Time zone | TZ0 |
| Command term | State | Question number | d(i) | Adapted from | N/A |
d(i).
[Maximum mark: 2]
19N.2.sl.TZ0.3d(i)
The following shows some compounds which can be made from ethene, C2H4.
ethene (C2H4) → C2H5Cl → C2H6O → C2H4O
(d(i))
State the reagents and conditions for the conversion of the compound C2H6O, produced in (b), into C2H4O.
[2]
Markscheme
K2Cr2O7/Cr2O72−/«potassium» dichromate «(VI)» AND acidified/H+
OR
«acidified potassium» manganate(VII) / «H+» KMnO4 / «H+» MnO4− ✔
NOTE: Accept “H2SO4” or “H3PO4” for “H+”.
Do not accept “HCl”.
Accept “permanganate” for “manganate(VII)”.
distil ✔
