on heating a powder of copper (ii) nitrate in a boliling tube, copper oxide, 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 gas X.?

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Solution

a) 2Cu(NO₃)_{2 $\to$}2CuO + O₂ + 4NO₂
b) When copper nitrate is heated , brown gas, NO₂ is formed
c) This reaction is decomposition reaction
d) Aqueous solution of the gas NO₂ is acidic as HNO₃ is formed.
3NO₂ + H₂O
$\to$ 2HNO₃ + NO

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On heating blue-colored powder of copper (II) nitrate in a boiling tube, copper oxide (black), oxygen gas, and a brown gas X are formed

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Question 39

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

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(c) Identity the type of reaction.
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a) 2Cu(NO3)2→2CuO + O2 + 4NO​2 b) When copper nitrate is heated , brown gas, NO2 is formed c) This reaction is decomposition reaction d) Aqueous solution of the gas NO2 is acidic as HNO3 is f​ormed. 3NO2 + H2O → 2HNO3 + NO

a) 2Cu(NO₃)_{2 $\to$}2CuO + O₂ + 4NO₂
b) When copper nitrate is heated , brown gas, NO₂ is formed
c) This reaction is decomposition reaction
d) Aqueous solution of the gas NO₂ is acidic as HNO₃ is formed.
3NO₂ + H₂O
$\to$ 2HNO₃ + NO