The equilibrium constant for the reaction; H2(g)+CO2(g)⇔H2O(g)+CO(g) is 16 at 10000C . If 1.0 mole of H2 and 1.0 mole of CO2 are placed in one litre flask, the final equilibrium concentration of CO at 10000C is

H2(g)+CO2(g)⇌H2O(g)+CO(g)    1             1                     0                0    x            x                    x                x_ (1−x)    (1−x)           x               x     Given 16=(x1−x)2                   4=x1−x               ⇒ 4−4x=x              ⇒x=45=0.8          ∴[CO]=x1=0.81=0.8 M