200) At 1000 K, the K_p for the reaction of CO₂ (g) with excess of graphite to form CO (g) is 9 atm. Then the mole % of CO in the equilibrium mixture of gases is:

201) On addition of positive catalyst to a reaction system undergoing reversible reaction:

202) The equilibrium constant of a reaction is 20. At eqilibrium, the rate constant of forward reaction is 10. The rate constant for backward reaction is:

203) Molar concentration of 96 gm of O₂ contained in 2 litre vessel is:

204) 1 mol of ethyl alcohol was treated with 1 mol of acetic acid at 25^oC. Two third of the acid changes into ester at equilibrium. The equilibrium constant for the reaction of hydrolysis of ester is: