At a given temperature, Kc is 4 for the reaction . Initially 0.6 moles each of H2 and CO2 are taken in 1lit flask. The equilibrium concentration of H2O(g) is

GivenH2(g) + CO2(g) ⇌  H2O(g) + CO(g); KC = 4Vvessel = 1 litLet 'x' moles of each of H2 and CO2 react to gives 'x' moles of each of H2O and CO a equilbiriumH2(g)+ CO2(g) ⇌  H2O(g) + CO(g); KC = 4KC = 41.2 - 2x = x