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Question
The nitrate salt which does not give a mixture of NO2 and O2 on heating is ______.
Options
AgNO3
KNO3
Cu(NO3)2
Zn(NO3)2
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Solution
The nitrate salt which does not give a mixture of NO2 and O2 on heating is KNO3.
Explanation:
When heated, alkali metal nitrates, such potassium or sodium nitrates, melt and transform into colourless liquids that break down to release oxygen gas.
\[\ce{2KNO3->[Δ][]2KNO2 + O2↑}\]
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