(a) At 298 K the standard free energy of formation of HO(1) is-237.23 kJ mol-, while that of its ionization to hydrogen and hydroxyl ions is 79.71 kJ mol. What will be the reversible emf at 298 K of the cell Pt | H(g. 1 bar) | H*(1 M) | OH(1 M) | O(g. 1 bar) | Pt (b) The enthalpy of formation at 298 K of HO(1) is - 285.85 kJ mol', while its enthalpy of ionization is 56.90 kJ mol-. Calculate the temperature coefficient of the standard emf at 298 K for the cell given in part (a).