Chemistry

Problem

The

K_b

value for a base is

5.0 \times 10^{-2} \text{ mol dm}^{-3}

at 298 K. What is the

K_a

value for its conjugate acid at this temperature? a.

5.0 \times 10^{-2}

2.0 \times 10^{-6}

2.0 \times 10^{-12}

2.0 \times 10^{-13}