Question 259866

When 1 mole of H2 and 1 mole of I2 were injected into a 1dm3 vessel of 490cm3 concentration of each gas that has reacted at equilibrium was found to be 0.772moldm3.Calculate the concentration or equilibrium constant.From there determine the free energy change of the reaction at 25 degrees Celsius. General gas constant (r)=8.314kmol-1k-1