AP EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Small quantities of \(\mathrm{NO}\) and \(\mathrm{HNO}_3\) are formed as impurities, when \(\mathrm{N}_2\) is prepared from \(\mathrm{NH}_4 \mathrm{Cl}\) (aq) and \(\mathrm{NaNO}_2\) (aq), these impurities can be removed by passing the \(\mathrm{N}_2\) gas through which of the following?
- A \(\mathrm{H}_2 \mathrm{SO}_4(\mathrm{aq})\) containing \(\mathrm{SO}_3\)
- B \(\mathrm{H}_2 \mathrm{SO}_4(\mathrm{aq})\) containing \(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7\)
- C \(\mathrm{H}_2 \mathrm{SO}_4(\mathrm{aq})\) containing \(\mathrm{KMnO}_4\)
- D \(\mathrm{HCl}(\mathrm{aq})\) containing \(\mathrm{KMnO}_4\)
Answer & Solution
Correct Answer
(B) \(\mathrm{H}_2 \mathrm{SO}_4(\mathrm{aq})\) containing \(\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7\)
Step-by-step Solution
Detailed explanation
\(\mathrm{NH}_4 \mathrm{Cl}(\mathrm{aq})+\mathrm{NaNO}_2(\mathrm{aq}) \rightarrow \mathrm{N}_2 \uparrow+2 \mathrm{H}_2 \mathrm{O}+\mathrm{NaCl}\) The impurities of \(\mathrm{NO}\) and \(\mathrm{HNO}_3\) in the \(\mathrm{N}_2\) gas can be removed by passing the gas through an…
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