Question:
Metal ‘M’ in the following reaction is:
\[
2 \text{MNO}_3 \rightarrow \text{M}_2\text{O} + 2\text{NO}_2 + \frac{1}{2}\text{O}_2
\]
Metal ‘M’ in the following reaction is:
\[
2 \text{MNO}_3 \rightarrow \text{M}_2\text{O} + 2\text{NO}_2 + \frac{1}{2}\text{O}_2
\]
Show Hint
Only lithium nitrate among alkali nitrates gives oxide on heating; others give nitrites.
Updated On: May 17, 2025
- Cs
- K
- Na
- Li
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The Correct Option is D
Solution and Explanation
- Lithium nitrate decomposes differently than other alkali nitrates:
\[
4\text{LiNO}_3 \rightarrow 2\text{Li}_2\text{O} + 4\text{NO}_2 + \text{O}_2
\]
- Other alkali nitrates like NaNO\(_3\), KNO\(_3\) decompose to nitrites, not oxides.
Thus, the given reaction matches lithium nitrate decomposition.
Thus, the given reaction matches lithium nitrate decomposition.
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