A salt 'X' of a metal which is used in the galvanizing process on heating produces an oxide of that metal 'Y' and a gas 'Z' . Z is used in the preparation of soda water, and 'Y' is used as a base of white paint. Identify X, Y, Z.

Explanation

To solve the problem step by step, we need to identify the salt 'X', the oxide 'Y', and the gas 'Z' based on the clues provided.

### Step 1: Identify the Salt 'X'
The problem states that 'X' is a salt of a metal used in the galvanizing process. Galvanizing typically involves the use of zinc to protect iron from rusting. Therefore, the salt 'X' is likely zinc carbonate (ZnCO₃).

### Step 2: Heating the Salt
When zinc carbonate (ZnCO₃) is heated, it decomposes. The decomposition reaction can be written as:
\[ \text{ZnCO}_3 \rightarrow \text{ZnO} + \text{CO}_2 \]
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