Chapter 15, Problem 14PE

In each pair, explain why one is a weaker acid than the other: (a) ${\text{H}}_{\text{2}}{\text{SO}}_{\text{4}}{\text{and HC1O}}_{\text{4}}\text{,}$ (b) ${\text{H}}_3{\text{AsO}}_{\text{4}}{\text{ and H}}_2{\text{SO}}_{\text{4}}$.