Question

On heating blue coloured powder of copper nitrate in a boiling tube, black coloured copper oxide, oxygen and a brown gas x is formed.

a.Identify the type of reaction and the gas x.

b.Write balanced chemical equation for the reaction.

c.Write the ph range of aqueous solution of the gas x.

Answer 1

Answer:

Cu(NO3)2 ---(in the presence of heat)---> 2CuO + 4NO2 + O2

the brown gas is NO2 / Nitrogen dioxide

The ph range of the brown gas is less than 7 because oxides of non metals are acidic in nature.

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