What will be the equilibrium mole fraction

Question

At 500 ^oC , K_p = 5.5 for the reaction

CO_(g) + H₂O = CO_2(g) + H_2(g)

1. What will be the equilibrium mole fraction of H₂O if a mixture of 1 mol of Co and 5 mol of H₂O is passed over a catalyst at this temperature and a pressure of 2 bars?

2. Explain what effect will there be of reducing the temperature of the reaction to 400K.