MHT CET · Chemistry · Ionic Equilibrium
Which from following mixtures in water acts as a basic buffer?
- A \(\mathrm{NH}_4 \mathrm{OH}+\mathrm{NH}_4 \mathrm{Cl}\)
- B \(\mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}+\mathrm{C}_6 \mathrm{H}_5 \mathrm{COONa}\)
- C \(\mathrm{HCOOH}+\mathrm{HCOOK}\)
- D \(\mathrm{CH}_3 \mathrm{COOH}+\mathrm{CH}_3 \mathrm{COONa}\)
Answer & Solution
Correct Answer
(A) \(\mathrm{NH}_4 \mathrm{OH}+\mathrm{NH}_4 \mathrm{Cl}\)
Step-by-step Solution
Detailed explanation
Basic buffer is the mixture of weak base and its salt with strong acid. In option \(\mathrm{A}, \mathrm{NH}_4 \mathrm{OH}\) is weak base and \(\mathrm{NH}_4 \mathrm{Cl}\) is salt of strong acid and weak base. Hence, \(\mathrm{NH}_4 \mathrm{OH}+\mathrm{NH}_4 \mathrm{Cl}\) is basic buffer. Other options are examples of acidic buffer.
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