17.
Given that when H2O (liquid) → H2 (gas)+ 1⁄2 O2 (gas) ΔH is + 285.8 kJ/mol and when H2 (gas)+ 1⁄2 O2 (gas)→ H2O (gas ) ΔH is -242.3 kJ/mol
The heat of conversion of 1 mol of H2O (liquid) to H2O (gas ) at constant pressure and temperature in kJ/mol will be
A:
+ 285.8
B:
-242.3
C:
+ 43.5
D:
+ 528.1
The answer is:
C
