MCQ
An equimolar solution of $\ce{NaNO_2}$ and $\ce{HNO_2}$ can act as a:
- AStrong reductant.
- BStrong oxidant.
- ✓Buffer solution.
- DNone of these.
✓
Answer
Correct option: C.
Buffer solution.
$\ce{HNO_2}$ is a weak acid.
$\ce{NaNO_2}$ is a salt of weak acid $\ce{HNO_2}$ with strong base $\ce{NaOH}.$
$\ce{NaNO_2}$ is a salt of weak acid $\ce{HNO_2}$ with strong base $\ce{NaOH}.$
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