The equilibrium constant `K_(c )` for the reaction `P_(4) (g) hArr 2P_(2)(g)` is 1.4 at `400^(@)C`. Suppose that 3 moles of `P_(4)` (g) and 2 moles of `P_(2)` (g) are mixed in 2 litre container at `400^(@)C`. What is the value of reaction quotient (Q)?

Options

A. `3//2`
B. `2//3`
C. 1
D. None of these

Answer

B

Explanation

`{:(P_(4)(g) ,hArr, 2P_(2)(g),),( "3 mol",,"2 mol",V=2L):}`
The reaction quotient is given by
`Q_(c ) = ([P_(2)(g)]^(2))/([P_(4)(g)])`
`Q_(c ) =((1)^(2))/((3//2))=2//3`