The acid dissociation constant at 25.0°C for hypochlorous acid (HClO) is 3.0 x 10-8. At equilibrium, the molarity of 3HO in a 0.010 M HClO solution will be:

      A) 1.7x10 -5        B) 0.010         C) 5.8x10 -10         D) 4.76         E) 2.00

The acid-dissociation constant for chlorous acid (HClO_2) is 1.1*10^-2. Calculate the concentrations of H^+, ClO_2^-, and HClO_2 at equilibrium if the initial concentration of HClO_2 is 1.25 M. A solution of sodium acetate (NaCH_3COO) has a pH of 9.70 with