11.On mixing 1 mole of ethyl alcohol with 1 mole of acetic acid at 298 K the equilibrium concentration of ester and water becomes 2/3 moles each. If 3 moles of alcohol is mixed with 1 mole of acid, the concentration of ester in moles at equilibrium will be

12.Equilibrium constant changes with

13.A substance x dissolves in water with a decrease in volume and absorption of heat solubility of X will be favoured by

14.Melting of ice is favoured by

15.The chemical system in equilibrium is not affected by