Question

1. 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?
2. Give the characteristic tests for the following gases
(a) CO2
(b) SO2
(c) O2
(d) H2

Answer 1

Heya!!Here is your answer friend ⤵⤵

(A). 3Cu(NO3)2 -------------3CuO + 3/2O2 + N2

(B) the brown gas X is nitrogen .

(C). It is a thermal decomposition reaction as copper nitrate on the application of heat energy breaks into reactant .

(D). N2O ( in aqueous solution) will have a PH value in the range 8-14. This is because It is a metal oxide . And metal oxides are basic in nature .

2.


➡CO2------ it turns lime water milky .

➡SO2------it has the smell of burning sulphur.

➡O2 ------it is a supporter of combustion .

➡H2------burns with a pop sound .


Hope it helps you ✌✌