Which of the following aqueous mixtures will most effectively resist changes in pH…

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

Problem

Which of the following aqueous mixtures will most effectively resist changes in pH when small amounts of strong acid or base are added? (a)

0.10\,\text{M}\;\mathrm{CH_3COOH}

and

0.10\,\text{M}\;\mathrm{NaCl}

(b)

0.10\,\text{M}\;\mathrm{HCl}

and

0.10\,\text{M}\;\mathrm{NaCl}

(c)

0.10\,\text{M}\;\mathrm{HF}

and

0.10\,\text{M}\;\mathrm{NaF}

(d)

0.10\,\text{M}\;\mathrm{CH_3COONa}

and

0.10\,\text{M}\;\mathrm{NaOH}