*On heating blue coloured powder of copper (II) nitrate in a boiling tube, copper oxide (black), oxygen gas and a brown gas X is formed (a) Write a balanced chemical equation of the reaction. (b) Identity the brown gas X evolved. (c) Identity the type of reaction. (d) What could be the pH range of aqueous solution of the gas X?
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*On heating blue coloured powder of copper (II) nitrate in a boiling tube, copper oxide (black), oxy...
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