The acid dissociation constant for boric acid, H3BO3, is 5.8 * 10-10. Calculate the dissociation constant, Kb, for the borate ion (BO33-).

A. 5.8 x 10^-10

B. 1.7 x 10^-5

C. 1.1 x 10^-4

D. 2.7 x 10^-3

According to the fact that The acid dissociation constant for boric acid, H3BO3, is 5.8 * 10-10 and calculating the dissociation constant, Kb, for the borate ion (BO33 - I have recognized the correct answer from the scale represented above. So, as for me, the right answer is the third option C. 1.1 x 10^-4.