) 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) Identify the brown gas X evolved. (c) Identify the type of reaction. (d) What could be the pH range of aqueous solution of the gas X?
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Answer:
(i)
(ii) The brown gas X is nitrogen dioxide, NO2. (1/2)
(iii) Thermal decomposition. (1/2)
(iv) pH< 7
Reason : NO2 dissolves in water to form acidic solution (pH range below 7).
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Answer:
(i) Sorry for the 1st "I don't know"
(ii) The brown gas X is nitrogen dioxide, NO2. (1/2)
(iii) Thermal decomposition. (1/2)
(iv) pH< 7
Reason : NO2 dissolves in water to form acidic solution (pH range below 7).
Explanation:
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