If K_a2 = 1.0 x 10^-4 and K_b2 = 1.0 x 10^-10, what is the value of K_w?

• A. K_w = 1.0 x 10^-12
• B. K_w = 1.0 x 10^-14
• C. K_w = 1.0 x 10^-15
• D. K_w = 1.0 x 10^-13

Answer: (B)