When 3 moles of A and 1 mole of B are mixed in 1 litre vessel, the following reaction takes place `A_((g)) + B_((g))hArr2C_((g)). 1.5` moles of C are formed. The equilibrium constant for the reaction is

Options

A. `0.12 `
B. `0.25 `
C. `0.50 `
D. `4.0`

Answer

D

Explanation

`underset((3-0.75))(A)+underset((1-0.75))Brarrunderset(1.5)C`
`K=([C^2])/([A][B])=((1.5)^2)/(2.25 xx0.25)=(2.25)/(2.25xx0.25)=4.0`