1. The solubility product constant for barium sulfate is 1.10e-10. Calculate ?G° at 298 K.
A. 56.8 kJ/mol
B. 24.7 kJ/mol
C. -24.7 kJ/mol
D. -56.8 kJ/mol
E. 52.0 kJ/mol
2. A reaction has the following characteristics under standard conditions: ?H° = positive, ?S° = positive. This reaction
A. is nonspontaneous at all T
B. is spontaneous at high T
C. is spontaneous at low T
D. is spontaneous at all T
E. Insufficient information to decide