Question

PCl₅ is 50% dissociated into PCl₃ and Cl₂ at 1 atmosphere. It will be 40% dissociated at :

(A) 1.75 atm 

(B) 1.84 atm 

(C) 2.00 atm 

(D) 1.25 atm

Answer 1

Correct option (A) 1.75 atm 

Explanation : 

Let x = degree of dissociation of PCl₅ at pressure p

y = degree of dissociation of PCl₅ at pressure p

Answer 2

My option is (A)

Explanation