Question

For the reversible reaction
`N_(2)(g)+3H_(2)(g) hArr 2NH_(3)(g)`
at `500^(@)C`, the value of `K_(p)` is `1.44xx10^(-5)` when the partial pressure is measured in atmosphere. The corresponding value of `K_(c)` with concentration in mol `L^(-1)` is
A. `1,44 xx 10^(-5)//(0.082 xx 500)^(-2)`
B. `1.44 xx 10^(-5)//(8.314 xx 773)^(-2)`
C. `1.44 xx 10^(-5)//(0.082 xx 773)^(2)`
D. `1.44 xx 10^(-5)//(0.082xx773)^(-2)`

Answer 1

Correct Answer - D
`Deltan_(g) =2 -4=-2 , K_(p)=K_(c)(RT)^(Deltan)`
`K_(c) =K_(p)//(RT)^(Deltan) =(1.44 xx 10^(-5))/((0.0821 xx 773)^(2))`