a) Determine the heat of vaporization of benzene at 25 °C using tabulated heats of formation. 

b) Determine Henry’s law constant of ammonia in water at 25 °C from the tabulated (g) and (aq) Gibbs energies of formation.

c) Generate an entry for the Gibbs energy of formation of CO based on the standard state for aqueous solutes (aq). 

d) N₂O gas is bubbled through water at 12 bar, 10 °C. Calculate the activity of N₂O (aq) and of water (l) in the liquid based on the indicated standard states.