The photolysis of water gives the substance:

Options

A. `OH^(-) + H^(+)`
B. `H_2 + OH^(-)`
C. `H_2+ O_2`
D. `H_2O + H_2O_2`

Answer

To solve the question regarding the photolysis of water, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Photolysis**: Photolysis refers to the process where light energy causes the breaking down of a chemical compound. In this case, we are looking at the photolysis of water (H₂O).

2. **Chemical Reaction**: The photolysis of water can be represented by the equation:
\[ 2 H_2O \xrightarrow{light} 2 H^+ + O_2 + 2 e^- \]
This indicates that water molecules are split into hydrogen ions (H⁺) and oxygen gas (O₂), along with electrons.

3. **Identifying Products**: From the reaction, we can see that the products of the photolysis of water are:
- Hydrogen ions (H⁺)
- Hydroxide ions (OH⁻)
- Oxygen gas (O₂)

4. **Analyzing the Options**: The options given are:
- OH⁻ + H⁺
- H₂ + OH⁻
- H₂ + O₂
- H₂O + H₂O

We need to identify which of these corresponds to the products formed during the photolysis of water.

5. **Correct Answer**: The correct answer is:
\[ \text{OH}^- + \text{H}^+ \]
This is because during the photolysis, water is split into hydroxide ions (OH⁻) and hydrogen ions (H⁺).

### Final Answer:
The photolysis of water gives the substance: **OH⁻ + H⁺**.

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