Chemical And Ionic Equilibrium Result Question 37
37. Aqueous solutions of $\mathrm{HNO} _3 ,\mathrm{KOH}, \mathrm{CH} _3 \mathrm{COOH}$ and $\mathrm{CH} _3 \mathrm{COONa}$ of identical concentrations are provided. The pair(s) of solutions which form a buffer upon mixing is(are)
$(2010)$
(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 $\mathrm{CH} _3 \mathrm{COONa}$
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Answer:
Correct Answer: 37. ( c,d )
Solution:
- In $\mathrm{HNO}_3$ and $\mathrm{CH}_3 \mathrm{COONa}$ combination, if $\mathrm{HNO}_3$ is present in limiting amount, it will be neutralised completely, leaving behind some excess of $\mathrm{CH}_3 \mathrm{COONa}$.
BETA
