... 904 CAN. J. CHEM. VOL. 53, 1975 ... The standard entropy (gas phase) can be esti- mated after Stull (24) as SO(g) = 99.75 eu, so that A~p(g) = -56.10 kcal mol-l. The free energy of transfer to aqueous solution can be Page 8. GUTHRIE: CARBONYL ADDITION REACTIONS 905 ...