For a reaction `C(s)+CO_(2)(g)hArr2CO(g)`Δn value is

Options

A. The equlibrium shifts in backward direction if more of CO is added
B. The equilibrium shifts in backward direction if more of CO is added
C. The equlibrium shifts in forward direction if more of corbon is added
D. On adding carbon, the equlibrium is not disturbed

Answer

A, B, D

Explanation

`Q_(p)=(P_(CO)^(2))/(P_(CO_(2))),Q_(C)=([CO]^(2))/([CO_(2)])`
When more of `CO_(2)` is added `Q_(p)` decreases, hence in order to reach equlibrium, system moves in forward direction, hence choice (a) is correct.
When more of CO is added, `Q_(p)` increases and therefore to reach equlibrium, system moves in backward directin, so choice (b) is correct.
Since active mass of colids is 1, hence changing the concentrations of carbon does not change Q. Hence adding carbon does not shift the equlibrium, (c) is incorrect. Whereas (d) is correct.