in this question the total pressure is 50 atm we have to find the pressure at which 50% - Chemistry - Chemical and Ionic Equilibrium

Question

in
this question the total pressure is 50 atm we have to find the
pressure at which 50% dissociation occurs at the same temperature

Vartika Jain · Accepted Answer

Dear Student,

PCl 5   ↔   PCl3   +  Cl2Initial            1                   0             0At time t     1-x                x             xGiven, x=0
25 at 50 atm pressureKp= (nPCl3nCl2nCl5)(P∑n)∆n     =((x)(x)(1-x))(P1+x)1     =P(x)2(1-x2)     =(0
25)2(50)1-(0 25)2     =3
33 atmWhen x=0
50, Kp remaining constantKp=P(x)2(1-x2)3 33=(0
50)2(P)1-(0
50)2or, P= 10 atmHence, correct answer is (A)

in this question the total pressure is 50 atm. we have to find the pressure at which 50% dissociation occurs at the same temperature