On heating blue-coloured powder of copper (II) nitrate in a boiling test tube, copper oxide (black), oxygen gas and a brown gas 'X' is formed. (a) Write a balanced chemical equation of the reaction.
(b)
(i) Identify the brown gas 'X' evolved.
(ii) Identify the type of reaction.
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The chemical formula of copper (II) nitrate is Cu(NO3)2. ... Therefore, the gases X and Y are oxygen and nitrogen dioxide respectively. In this reaction, as copper (II) decomposes to form copper oxide, nitrogen dioxide gas, and oxygen gas as products, therefore, it is a decomposition reaction.
Explanation:
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