Question

At a given temperaturee, the equilibrium constant for reaction `PCl_(5(g))hArrPCl_(3(g))+Cl_(2(g))is 2.4xx10^(-3).` At the same temperaturee, the equlibrium constant for reaction `PCl_(3(g))+Cl_(2(g))hArrPCl_(5(g))is`
A. `2.4xx10^(-3)`
B. `-2.4xx10^(-3)`
C. `-4.2xx10^(2)`
D. `4.8xx10^(-2)`

Answer 1

Correct Answer - C
Reaction is reversed. Hence
`K=(1)/((2.4xx10^(3)))=4.2xx10^(2)`