Which of the following does not give `H^(+)` ions in aqueous solution ?

Options

A. `H_(2)CO_(3)`
B. `C_(2)H_(5)OH`
C. `CH_(3)COOH`
D. `H_(3)PO_(4)`

Explanation

To determine which of the following substances does not give \( H^+ \) ions in aqueous solution, we need to analyze each option provided.

### Step-by-Step Solution:

1. **Identify the Options**: The question presents several compounds. We need to evaluate each one to see if it produces \( H^+ \) ions when dissolved in water.

2. **Evaluate Each Compound**:
- **Option 1**: (Not specified in the question but let's assume it is a strong acid like HCl)
- Strong acids like HCl dissociate completely in water to produce \( H^+ \) ions. Therefore, this option does produce \( H^+ \) ions.

- **Option 2**: \( C_2H_5OH \) (Ethanol)
- Ethanol is a covalent compound and does not dissociate into ions in aqueous solution. Therefore, it does not produce \( H^+ \) ions.

- **Option 3**: \( CH_3COOH \) (Acetic Acid)
- Acetic acid is a weak acid that partially dissociates in water to produce \( H^+ \) ions. Therefore, it does produce \( H^+ \) ions.

- **Option 4**: \( H_3PO_4 \) (Phosphoric Acid)
- Phosphoric acid is a triprotic acid that dissociates in water to produce \( H^+ \) ions. Therefore, it does produce \( H^+ \) ions.

3. **Conclusion**: After evaluating all options, the only compound that does not produce \( H^+ \) ions in aqueous solution is **Option 2: Ethanol (\( C_2H_5OH \))**.

### Final Answer:
**The compound that does not give \( H^+ \) ions in aqueous solution is \( C_2H_5OH \) (Ethanol).**