Chapter 9.4, Problem 9.16P

Rank the acids in each group in order of increasing acid strength.
a. ${\text{H}}_{\text{3}}{\text{PO}}_{\text{4}}{\text{, H}}_{\text{2}}{\text{PO}}_{\text{4}}{}^{-}{\text{, HPO}}_{\text{4}}{}^{\text{2-}}$
b. ${\text{HCN, HF, CH}}_{\text{3}}\text{COOH}$
More Practice: Try Problems 9.51-9.54.