The pH of a solution of hypobromous acid is measured to be 4. 72. Calculate the acid dissociation constant ( Kₐ ) of hypobromous acid. Round your answer to significant digits.
a) 1. 6 × 10⁻⁵
b) 2. 1 × 10⁻⁵
c) 2. 6 × 10⁻⁵
d) 3. 2 × 10⁻⁵