For the reaction, `A+BhArr3C`, at `25^(@)C`, a `3 litre` vessel contains `1`, `2`, `4mol es` of `A`, `B` and `C` respectively. If `K_(c)` for the reaction is `10`, the reaction will proceed in :

Options

A. forward direction
B. backward direction
C. in either direction
D. in equilibrium

Explanation

`Quotient Q=([C]^(3))/([A][B])=(4^(3)xx3xx3)/(3^(3)xx1xx2)=10.66`
[`[C]=(4)/(3)`, `[A]=(1)/(3)`, `[B]=(2)/(3)`]
Since `K_(c)=10`. Thus `Q` must decrease to attain value of `K_(c)` and therefore `[C]` must decrease or `[A]` or `[B]` must increase i.e., backward direction.