If for fluoride ion at is 10.83

CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases

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 : (1)

1.74 \times 10^{-5}

(2)

3.52 \times 10^{-3}

(3)

6.75 \times 10^{-4}

(4)

5.38 \times 10^{-2}