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Question

The action of heat on the blue crystalline solid X, gives a reddish gas Y, a gas which re-lights a glowing splint and leaves a black residue. When gas Z, which has a rotten egg smell, is passed through a solution of X, a black ppt. is formed.

(a) Identify X, Y and Z.

(b) Write equation for action of heat on X.

(c) Write equation between solution of X and gas Z.


Solution

(a) X= Copper nitrate,
     Y= Nitrogen dioxide,
     Z = Hydrogen sulphide 

(b)   2Cu(NO3)22CuO+4NO2+O2

 (c).   Cu(NO3)2+H2SCuS+2HNO3


Chemistry
Concise Chemistry
Standard X

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