The dissociation of I, can be monitored by measuring the total pressure, and three sets of results are as follows:
T/K 973 1073 1173
100p/atm 6.244 7.500 9.181
104nj 2.4709 2.4555 2.4366
Where n1 is the amount of I atoms per mole of I, molecules in the mixture,
which occupied 342.68 em3 Calculate the equilibrium constants of the dissociation and the standard enthalpy of dissociation at the mean temperature.