Phosphorus pentachloride dissociates as follows in a closed reaction vessel,
`PCl_5(g)iffPCl_3(g)+Cl_2(g)`
If total pressure at equilibrium of the reaction mixture is P and degree of dissociation of `Pcl_5` is x, the partial pressure of `Pcl_3` will be

Options

A. `(x(x+1))P`
B. `((2x)(x+1))P`
C. `(x(x-1))P`
D. `(x(1-x))P`

Answer

A