For which of the following shall the ratio of `K_(p)//K_(c)` is unity at 300K and 1 atm. Pressure

Options

A. `N_(2)(g)+3H_(2)(g ) hArr 2NH_(3)(g)`
B. `N_(2)(g)+O_(2)(g) hArr 2NO(g)`
C. `NH_(4)(g) hArr HCl(g)+NH_(3)(g)`
D. `PCl_(5)(g) hArr PCl_(3)(g)+Cl_(2)(g)`

Answer

B

Explanation

We know that `K_(p)=K_(c )(RT)^(Deltan)`
For reaction where `Deltan=0`
`K_(p)=K_(c )(RT)^(0)`
or `(K_(p))/(K_(c ))=1`