An o.1 molar solution of butyric acid (HBu) has a pH that varies with the temperature at 10 C- pH=2.9, at 50 C: pH=2.95
a. Compute the equilibrium constant Ka at each temp.
b. For the reaction represented by this Ka, is the reaction endothermic or exothermic? Justify your answer using Le Chatelier's Principle.