Which of the following aqueous mixtures would best function as a buffer solution at 25 °C?

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

Problem

Which of the following aqueous mixtures would best function as a buffer solution at 25 °C? (a)

0.50\,\text{M }\mathrm{HClO}

and

0.50\,\text{M }\mathrm{NaCl}

(b)

0.50\,\text{M }\mathrm{HC_2H_3O_2}

and

0.50\,\text{M }\mathrm{NaOH}

(c)

0.50\,\text{M }\mathrm{HC_2H_3O_2}

and

0.50\,\text{M }\mathrm{NaC_2H_3O_2}

(d)

0.50\,\text{M }\mathrm{NH_3}

and

0.50\,\text{M }\mathrm{NaCl}