Question

The pressure at which equilibrium constant in terms of pressures is found to be equal to that in terms of mole fraction for the equilibrium,
` PCl_(5) (g) hArr PCl_(3) (g) + Cl_(2) (g) `
A. 10 atm
B. 1 atm
C. `0*1 `atm
D. 2 atm

Answer 1

Correct Answer - B
`K_(p) = K_(x) (P)^(Delta n _(g))`
` "Here " , Delta n _(g) = 1. " Hence " , K_(p) = K_(x)(P).`
` " Thus ", K_(p)= K_(x) " only when " P=1 atm`