# Which is the stronger acid in each of the following pair HBrO_2 or HBrO?

Jul 31, 2015

${\text{HBrO}}_{2}$ is the stronger acid.

#### Explanation:

For oxyacids with the same central atom, the acidity increases as the number of atoms bonded to the central atom increases.

Thus, we predict that ${\text{HBrO}}_{2}$ should be a stronger acid than $\text{HBrO}$.

This is confirmed by their ${K}_{\text{a}}$ values .

${\text{HBrO}}_{2}$ has K_a = 1.2 × 10^-5, while $\text{HBrO}$ has K_a = 2 × 10^-9.