DP Chemistry (last assessment 2024)
Question 22N.1.sl.TZ0.21
| Date | November 2022 | Marks available | [Maximum mark: 1] | Reference code | 22N.1.sl.TZ0.21 |
| Level | sl | Paper | 1 | Time zone | TZ0 |
| Command term | Determine | Question number | 21 | Adapted from | N/A |
21.
[Maximum mark: 1]
22N.1.sl.TZ0.21
What occurs during the operation of a voltaic cell based on the given reaction?
2Cr (s) + 3Fe2+ (aq) → 2Cr3+ (aq) + 3Fe (s)
[1]
Markscheme
B
Examiners report
48% of the candidates deduced the direction of electron flow and the direction of ion flow correctly based on the equation of the overall reaction in the voltaic cell. The most commonly chosen distractor was A which had the correct direction of electron flow but reversed the ion flow.