DP Chemistry (last assessment 2024)
Question 19N.2.hl.TZ0.3d(i)
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.2.hl.TZ0.3d(i) |
| Level | hl | Paper | 2 | Time zone | TZ0 |
| Command term | State | Question number | d(i) | Adapted from | N/A |
d(i).
[Maximum mark: 1]
19N.2.hl.TZ0.3d(i)
Propene is an important starting material for many products. The following shows some compounds which can be made from propene, C3H6.
Propene (C3H6) → C3H7Cl → C3H8O → C3H6O
(d(i))
State the reagents for the conversion of the compound C3H8O formed in (a)(iv) into C3H6O.
[1]
Markscheme
K2Cr2O7/Cr2O72–/«potassium» dichromate «(VI)» AND acidified/H+
OR
«acidified potassium» manganate(VII) / «H+ and» KMnO4 / «H+ and» MnO4– ✔
NOTE: Accept “H2SO4” or “H3PO4” for “H+”.
Do not accept HCl.
Accept “permanganate” for “manganate(VII)”.
