Complete the following reactions :
(i) `R-CH_(2)COOHoverset(X_(2)//"Red " P)rarr?`
(ii) `2CH_(3)COOHoverset(P_(2)O_(5)//"heat")rarr?`

Explanation

To solve the given reactions, we will analyze each step carefully.

### (i) Reaction: `R-CH₂COOH + X₂ (Red P) → ?`

1. **Identify the Reaction Type**: The reaction involves a carboxylic acid (R-CH₂COOH) reacting with halogens (X₂) in the presence of red phosphorus. This is known as the Hell-Volhard-Zelinsky (HVZ) reaction.

2. **Determine the Halogen**: The halogen (X) can be either chlorine (Cl₂) or bromine (Br₂).

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