DP Chemistry (last assessment 2024)
Question 19N.1.hl.TZ0.18
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.1.hl.TZ0.18 |
| Level | hl | Paper | 1 | Time zone | TZ0 |
| Command term | List | Question number | 18 | Adapted from | N/A |
18.
[Maximum mark: 1]
19N.1.hl.TZ0.18
What is the order of increasing (more exothermic) enthalpy of hydration?
Xn+ (g) → Xn+ (aq)
A. Ca2+, Mg2+, K+, Na+
B. Na+, K+, Mg2+, Ca2+
C. K+, Na+, Ca2+, Mg2+
D. Mg2+, Ca2+, Na+, K+
[1]
Markscheme
C