Chemistry

Problem

\text{p}K_b

for fluoride ion at

25^\circ\text{C}

is 10.83, the ionisation constant of hydrofluoric acid in water at this temperature is : a.

1.74 \times 10^{-5}

3.52 \times 10^{-3}

6.75 \times 10^{-4}

5.38 \times 10^{-2}