The Acid-Dissociation Constant at 25

Multiple Choice

The acid-dissociation constant at 25.0°C for hypochlorous acid (HClO) is 3.0 × 10^-8. At equilibrium, the molarity of H₃O⁺ in a 0.010 M solution of HClO is __________.

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