MCQ Solution: Thermodynamics
The heat exchange at constant volume for the decomposition of Silver (I) Oxide is found to be 3.66 kJ. The heat change at constant pressure will be
1) > 30.66 kJ
2) < 30.66 kJ
3) 30.66 kJ
4) unpredictable
Solution
Heat change at constant volume for the decomposition of silver(I) oxide = 30.66 kJ.
Ag2O(s)⟶2Ag(s)+12O2(g)
Here, Δng=+ve
Thus, ΔH>ΔE
Since, ΔE=30.66kJ,
ΔH>30.66kJ.