The Two Acid Dissociation Constants for Carbonic Acid,H₂CO₃,are 4 $\times$ 10^-7 and 4

Multiple Choice

The two acid dissociation constants for carbonic acid,H₂CO₃,are 4.3 $\times$ 10^-7 and 4.8 $\times$ 10^-11 at 25°C.The base constant,K_b,or hydrolysis constant for HCO₃^- is:

A) 4.3 $\times$ 10^-7
B) 4.8 $\times$ 10^-11
C) 2.1 $\times$ 10^-17
D) 2.3 $\times$ 10^-8
E) 6.2 $\times$ 10^-22