At temperature T , a compound AB 2 ( g ) dissociates according to the reaction 2 AB 2 ( g ) ⇌ 2 AB ( g ) + B 2 ( g ) With a degree of dissociation α , which is small compared with unity. The exp

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At temperature T , a compound AB 2 ​ ( g ) dissociates according to the reaction 2 AB 2 ​ ( g ) ⇌ 2 AB ( g ) + B 2 ​ ( g ) With a degree of dissociation α , which is small compared with unity. The expression for K p ​ , in terms of α and total pressure P T ​ , is:

TestHub · Accepted Answer

2 A B 2 ​ ( g ) ⇌ 2 A B ( g ) + B 2 ​ ( g ) ( 1 − α ) α 2 α ​ (At equilibrium ) K p ​ = ( 2 + α 2 ( 1 − α ) P T ​ ​ ) 2 ( 2 + α 2 α × P T ​ ​ ) 2 ( ( 2 + α ) α P T ​ ​ ) ​ = P T ​ 2 α 3 ​

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