For which of the following reaction does the equilibrium constant depend on the units of concentration

Options

A. `NO_((g))hArr(1)/(2)N_(2(g)) + (1)/(2)O_(2(g))`
B. `Zn_((s)) + Cu_((aq))^(2+)hArrCu_((s)) + Zn_((aq))^(2+)`
C. `C_(2)H_(2)OH_((l)) + CH_(3)COOH_((l))hArrCH_(3)COOC_(2)H_(5(l)) + H_(2)O_((l))` (Reaction carried in an inert solvent)
D. `COCI_(2(g))hArr(CO_((g)) + CI_(2(g)`

Answer

D

Explanation

`Delta n = 1` for this change
So the equilibrium constant depends on the unit of concentration.