A laboratory has of hydrofluoric acid

CHEMISTRY · Subjective · A Level · Chemistry · Acids and bases · Acids and bases

Problem

A laboratory has

100.\,\text{mL}

0.25\,\text{M}

hydrofluoric acid

(HF,\; pK_a = 3.14)

. What volume (in mL) of

0.0800\,\text{M}

NaOH

must be added to this sample so that the resulting buffer has a pH of

3.50