Give balanced equations for the laboratory preparations of the organic compounds :
An unsaturated hydrocarbon from calcium carbide.

Explanation

To prepare an unsaturated hydrocarbon from calcium carbide, we can follow these steps to derive the balanced chemical equation:

### Step 1: Identify the Reactants
The main reactant we are using is calcium carbide (CaC₂). When calcium carbide reacts with water (H₂O), it undergoes hydrolysis.

### Step 2: Write the Chemical Reaction
The reaction of calcium carbide with water can be represented as follows:
\[ \text{CaC}_2 + \text{H}_2\text{O} \rightarrow \text{Ca(OH)}_2 + \text{C}_2\text{H}_2 \]
...