Name the gas evolved in each of the following cases :Action of heat on copper nitrate.

Explanation

To solve the question regarding the gas evolved during the action of heat on copper nitrate, we can follow these steps:

### Step 1: Identify the chemical formula of copper nitrate.
Copper nitrate is represented by the chemical formula Cu(NO3)2·3H2O. It is a blue crystalline solid that contains three molecules of water.

### Step 2: Understand the decomposition process.
When copper nitrate is heated, it undergoes thermal decomposition. The first step involves the loss of water molecules (dehydration), and the second step involves the breakdown of the nitrate itself.

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