Consider the following reactions
I. `H_3C Cl_3 overset(OH^(Ɵ))to`
II. `H_3C CHO overset([Ag(NH_3)_2]^(+)OH^(Ɵ))to`
III. `H_3C CO_2C_2H_5 overset(OH^(Ɵ))to`
Carboxylic acid is the final product only in the reaction (s)

Options

A. I, II
B. II, III
C. II
D. III

Explanation

To determine which of the given reactions produces a carboxylic acid as the final product, let's analyze each reaction step by step.

### Step 1: Analyze Reaction I
**Reaction I:** `H3C Cl3 + OH^- → ?`

In this reaction, we have a trichloromethane (H3C Cl3) reacting with hydroxide ions (OH^-). The hydroxide ion acts as a nucleophile and will replace the chlorine atoms in a nucleophilic substitution reaction.

1. The reaction will proceed through a series of steps where each Cl atom is replaced by OH.
2. However, the final product will not be a carboxylic acid; instead, it will yield an alcohol (H3C OH) after all Cl atoms are replaced.

**Conclusion for Reaction I:** No carboxylic acid is formed.

### Step 2: Analyze Reaction II
**Reaction II:** `H3C CHO + [Ag(NH3)2]+ OH^- → ?`

This reaction involves an aldehyde (H3C CHO) reacting with Tollens' reagent, which is [Ag(NH3)2]+ in the presence of OH^-.

1. The aldehyde is oxidized to a carboxylic acid in the presence of Tollens' reagent.
2. The reaction will convert the aldehyde (H3C CHO) into acetic acid (H3C COOH).

**Conclusion for Reaction II:** A carboxylic acid is formed.

### Step 3: Analyze Reaction III
**Reaction III:** `H3C CO2C2H5 + OH^- → ?`

In this reaction, we have an ester (H3C CO2C2H5) reacting with hydroxide ions (OH^-).

1. The ester undergoes hydrolysis in the presence of a base (OH^-), leading to the formation of a carboxylate ion (H3C COO^-) and an alcohol (C2H5OH).
2. If the reaction is carried out under acidic conditions, the carboxylate ion can be protonated to form a carboxylic acid (H3C COOH).

**Conclusion for Reaction III:** A carboxylic acid is formed.

### Final Conclusion:
The reactions that yield a carboxylic acid as the final product are:
- Reaction II: `H3C CHO + [Ag(NH3)2]+ OH^- → H3C COOH`
- Reaction III: `H3C CO2C2H5 + OH^- → H3C COOH (after hydrolysis)`

Thus, the reactions that produce a carboxylic acid are **II and III**.

---