WBJEE · Chemistry · Ionic Equilibrium
Aqueous solution of \(\mathrm{HNO}_{3}, \mathrm{KOH}, \mathrm{CH}_{3} \mathrm{COOH}\) and \(\mathrm{CH}_{3} \mathrm{COONa}\) of identical concentration are provided. The pair (s) of solutions which form a buffer upon mixing is (are)
- A \(\mathrm{HNO}_{3}\) and \(\mathrm{CH}_{3} \mathrm{COOH}\)
- B \(\mathrm{KOH}\) and \(\mathrm{CH}_{3} \mathrm{COONa}\)
- C \(\mathrm{HNO}_{3}\) and \(\mathrm{CH}_{3} \mathrm{COONa}\)
- D \(\mathrm{CH}_{3} \mathrm{COOH}\) and \(\mathrm{CH}_{3} \mathrm{COONa}\)
Answer & Solution
Correct Answer
(D) \(\mathrm{CH}_{3} \mathrm{COOH}\) and \(\mathrm{CH}_{3} \mathrm{COONa}\)
Step-by-step Solution
Detailed explanation
A Weak acid and its salt with a strong base forms a buffer.\(\therefore\) (D) \(\mathrm{HNO}_{3}\) being a strong acid, displaces weaker acid \(\mathrm{CH}_{3} \mathrm{COOH}\).…
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