34. The solubility of which of the following compounds in water can not be increased by adding HNO3? (A) Fe(OH)3 (B) CuS (C) AlPO4 (D) HgCl2

36. For the reaction A + B $\rightleftharpoons$ C + D, $\Delta H^\circ = +40$ kJ and $\Delta S^\circ = +50$ J/K. Therefore, the reaction under standard conditions is (A) spontaneous at temperatures less than 10 K (B) spontaneous at temperatures greater than 800 K (C) spontaneous only at temperatures between 10 K and 800 K (D) spontaneous at all temperatures