Write chemical equations for the following reactions:
(i) Propanone is treated with dilute `Ba(OH)_(2)`
(ii) Acetophenone is treated with Zn (Hg)/Conc. HCI
(iii) Benzoyl chloride is hydrogenated in presence of Pd/`BaSO_(4)`.

Explanation

To solve the question, we will write the chemical equations for the three reactions mentioned.

### (i) Propanone is treated with dilute Ba(OH)₂

1. **Identify the reactant**: Propanone, which has the chemical formula \( \text{CH}_3\text{C(=O)CH}_3 \).
2. **Identify the reaction**: When propanone reacts with dilute barium hydroxide (\( \text{Ba(OH)}_2 \)), it undergoes aldol condensation.
3. **Write the equation**:
\[
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