A student has of weak acid solution (HA, )

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

Problem

A student has

50.0\,\text{mL}

0.200\,\text{M}

weak acid solution (HA,

\text{p}K_a=4.76

). What volume, in millilitres, of

0.500\,\text{M}

sodium salt (NaA) must be added to obtain a buffer with

\text{pH}=5.06

? Assume volumes are additive and that no other reactions occur.