CBSE Class 10 Answered
On heating blue coloured powder of Copper (I) 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 the aqueous solution of the gas X ?
Asked by susrisangita792 | 07 Jun, 2023, 11:54: AM
Expert Answer
Dear Student,
(a)The balanced chemical equation for the reaction of heating copper (II) nitrate in a boiling tube,
Cu(NO3)2 + heating → 2CuO(s) + 4NO2(g) + O2(g)
Copper (II) nitrate Copper Nitrogen dioxide Oxygen
(b) Brown gas evolved is nitrogen dioxide gas (NO2)
(c) It is a thermal decomposition reaction.
(d) pH range of the aqueous solution of the gas X i.e. NO2 gas.
Aqueous solution of non-metals generally form acidic solution.
Similarly aqueous solution of NO2 forms acidic solution with pH range 1 to 6 or below 7.
Answered by | 08 Jun, 2023, 01:55: PM
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