In a 500 ml capacity vessel CO and `Cl_(2)` are mixed to form `COCl_(2)`. At equilibrium, it contains 0.2 moles of `COCl_(2)` and 0.1 mole of each of CO and `Cl_(2)`. The equilibrium constant `K_(c)` for the reaction `CO+Cl_(2) hArr COCl_(2)` is

Options

A. 20
B. 15
C. 10
D. 5

Answer

C

Explanation

`CO+Cl_(2) to COCl_(2)`
`{:(,"eq mole",0.1,0.1,0.2),(,"eq. conc",(0.1)/(0.5),(0.1)/(0.5),(0.2)/(0.5)):}`
`K_(c)=(2//5)/(1//5 xx 1//5)=10`