DP Chemistry (last assessment 2024)
Question 22M.1.hl.TZ2.14
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.1.hl.TZ2.14 |
| Level | hl | Paper | 1 | Time zone | TZ2 |
| Command term | State | Question number | 14 | Adapted from | N/A |
14.
[Maximum mark: 1]
22M.1.hl.TZ2.14
Which equation represents hydration enthalpy?
A. Na+ (g) → Na+ (aq)
B. Na+ (aq) → Na+ (g)
C. NaCl (s) → NaCl (aq)
D. NaCl (aq) → NaCl (s)
[1]
Markscheme
A
Examiners report
65% of the candidates recognized the equation that represents hydration enthalpy. The most commonly chosen distractor was an enthalpy of solution.