Question

The values of ΔfH o (298 K) for SO2(g) and SO3(g) are –296.8 and – 395.7 kJ mol–1 . What is the value of ΔrH o (298 K) per mole of SO2 for the following reaction? 2SO2(g) + O2(g) → 2SO3(g).

Answer 1

Answer:

Explanation:

SO2​(g)+1/2O2​(g)⇌SO3​(g)

K1​=[SO3​]/[SO2​][O2​]1/2

2SO3​(g)⇌2SO2​(g)+O2​(g)

K2​=[O2​][SO2​]2/[SO3​]2

so,

K2​=1/K1​2