DP Chemistry (first assessment 2025)
Question SPM.1A.HL.TZ0.21
Date | May Specimen-2023 | Marks available | [Maximum mark: 1] | Reference code | SPM.1A.HL.TZ0.21 |
Level | HL | Paper | 1A | Time zone | TZ0 |
Command term | Question number | 21 | Adapted from | N/A |
21.
[Maximum mark: 1]
SPM.1A.HL.TZ0.21
What is the enthalpy change for the reaction in kJ mol−1?
CO2 (g) H2 (g) → CO (g) H2O (g)
2CO (g) + O2 (g) → 2CO2 (g) H = 566 kJ mol1
2H2 (g) + O2 (g) → 2H2O (l) H = 572 kJ mol1
H2O (g) → H2O (l) H = 44 kJ mol1
A. 1182
B. 899
C. 41
D. 41
[1]
Markscheme
D
