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Question: Answered & Verified by Expert
Which of the following would produce a buffer solution when mixed in equal volumes?
ChemistryIonic EquilibriumTS EAMCETTS EAMCET 2001
Options:
  • A $1 M \mathrm{CH}_3 \mathrm{COOH}$ and $0.5 \mathrm{M} \mathrm{NaOH}$
  • B $1 \mathrm{M} \mathrm{CH}_3 \mathrm{COOH}$ and $0.5 \mathrm{M} \mathrm{HCI}$
  • C $1 M \mathrm{NH}_4 \mathrm{OH}$ and $0.5 \mathrm{MNaOH}$
  • D $1 \mathrm{M} \mathrm{NH}_4 \mathrm{Cl}$ and $0.5 \mathrm{M} \mathrm{HCl}$
Solution:
1017 Upvotes Verified Answer
The correct answer is: $1 M \mathrm{CH}_3 \mathrm{COOH}$ and $0.5 \mathrm{M} \mathrm{NaOH}$
$\mathrm{CH}_2 \mathrm{COOH}+\mathrm{HONa} \longrightarrow \mathrm{CH}_3 \mathrm{COONa}+\mathrm{H}_2 \mathrm{O}$
$\therefore$ Weak acid $\mathrm{CH}_2 \mathrm{COOH}$ and its salt with strong base $\mathrm{CH}, \mathrm{COONa}$ acts as acidic buffer.

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