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ICSE Class 10 Chemistry Question 38 of 63

Study of Compounds — Nitric Acid — Question 38

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Question

Question 2(2012)

State one observation for the following: Zinc nitrate crystals are strongly heated.

Answer

Reddish brown nitrogen dioxide gas is evolved on heating zinc nitrate crystals.

2Zn(NO3)2→Δ2ZnO+O2+4NO22\text{Zn(NO}_3)_2 \xrightarrow{\Delta} 2\text{ZnO} + \text{O}_2 + 4\text{NO}_2