The decomposition 2 SO _3(g) 2 SO _2(g)+ O _2(g) has at a certain temperature

CHEMISTRY · Subjective · A Level · Chemistry · Gaseous equilibria (Kp) · Gaseous equilibria (Kp)

Problem

The decomposition

2\text{SO}_3(g)\rightleftharpoons2\text{SO}_2(g)+\text{O}_2(g)

has

K_p = 0.20

at a certain temperature. Compute

K_p

for

\text{SO}_3(g)\rightleftharpoons\text{SO}_2(g)+\tfrac12\text{O}_2(g)

at the same temperature and state whether the new equilibrium constant is numerically larger or smaller than the original.