K_w for the auto-ionization of water, H₂O(l)$\to$ H⁺(aq)+ OH^- (aq), is 1.0 $\times$ 10^-14. What are the signs (+/-)of $\Delta$S° and $\Delta$H° for the reaction at 25°C? A)($\Delta$S° = (+)and $\Delta$H° = (+)) B)($\Delta$S° = (+)and $\Delta$H° = (-)) C)($\Delta$S° = (-)and $\Delta$H° = (+)) D)($\Delta$S° = (-)and $\Delta$H° = (-))

Question

Quizplus · Accepted Answer

The reaction is endothermic (F1F1F1S1F1F1F10H° = (+)) because heat is required to break the O-H bonds in water. The reaction is also spontaneous (F1F1F1S1F1F1F10S° = (+)) because the equilibrium constant is greater than 1.

Kw for the Auto-Ionization of Water, H2O(l) →\to→ H+(aq)+ OH- (Aq), Is 1

K_w for the Auto-Ionization of Water, H₂O(l) $\to$ H⁺(aq)+ OH^- (Aq), Is 1