At certain temperature compound AB2(g) dissociates according to the reaction: 2AB2(g) ⇌ 2AB(g) + B2(g) With the degree of dissociation α, which is small compared with unity. The expression of Kp, in terms of α and initial pressure P is: At certain temperature compound AB2(g) dissociates according to the reaction: 2AB2(g) ⇌ 2AB(g) + B2(g) [...]