Consider the following reactions
I. `H_(3)C CI_(3) overset(OH^(Theta))rarr`
II. `H_(3)C CHO overset([Ag(NH_(3))_(2)]^(+)OH^(Theta))rarr`
III. `H_(3)C CO_(2)C(2)H_(5) overset(OH^(Theta))rarr`
Carboxylic acid is the final product only in the reduction (s)

Options

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

Explanation

To determine which of the given reactions results in the formation of a carboxylic acid, we will analyze each reaction step by step.

### Step 1: Analyze Reaction I
**Reaction:**
\[ \text{H}_3\text{C-CI}_3 \overset{\text{OH}^-}{\rightarrow} \]

In this reaction, the hydroxide ion (OH⁻) acts as a nucleophile and attacks the carbon atom bonded to the three chlorine atoms (CCl₃). The chlorine atoms are good leaving groups, and they will be replaced by hydroxyl groups one by one.

- The reaction proceeds with the substitution of Cl atoms by OH groups.
- Eventually, the carbon will be fully substituted, resulting in the formation of a carboxylic acid salt (not the acid itself) due to the presence of OH⁻ in the basic medium.

**Final Product:** Carboxylic acid salt (not a carboxylic acid).

### Step 2: Analyze Reaction II
**Reaction:**
\[ \text{H}_3\text{C-CHO} \overset{[\text{Ag(NH}_3)_2]^+ \text{OH}^-}{\rightarrow} \]

In this reaction, we have an aldehyde (H₃C-CHO) reacting with Tollens' reagent (Ag(NH₃)₂⁺) in a basic medium.

- Aldehydes are oxidized to carboxylic acids in the presence of Tollens' reagent.
- The carbonyl group (C=O) of the aldehyde is oxidized, resulting in the formation of a carboxylic acid.

**Final Product:** Carboxylic acid.

### Step 3: Analyze Reaction III
**Reaction:**
\[ \text{H}_3\text{C-CO}_2\text{C}_2\text{H}_5 \overset{\text{OH}^-}{\rightarrow} \]

In this reaction, we have an ester (ethyl acetate) reacting with hydroxide ions.

- The reaction of an ester with a base typically leads to hydrolysis, resulting in the formation of a carboxylic acid and an alcohol.
- In this case, the ester will hydrolyze to form acetic acid (carboxylic acid) and ethanol.

**Final Product:** Carboxylic acid.

### Conclusion
From the analysis:
- Reaction I does not yield a carboxylic acid but a carboxylic acid salt.
- Reaction II yields a carboxylic acid.
- Reaction III yields a carboxylic acid.

Thus, the reactions that result in the formation of a carboxylic acid are **II and III**.

### Final Answer
Carboxylic acid is the final product only in the reductions of reactions **II and III**.

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