The acid-dissociation constant,K_a,for an unknown acid HA is 4.57 × 10^-3.What is the base-dissociation constant,K_b,for the unknown anion A^-?

Question

Quizplus · Accepted Answer

The relationship between K_a and K_b is given by the equation K_w = K_a × K_b, where K_w is the ion-product constant of water (1.0 × 10^-14 at 25°C). Solving for K_b gives K_b = K_w / K_a = (1.0 × 10^-14) / (4.57 × 10^-3) = 2.19 × 10^-12.

The Acid-Dissociation Constant,Ka,for an Unknown Acid HA Is 4

The Acid-Dissociation Constant,K_a,for an Unknown Acid HA Is 4