Oxidation state of oxygen inhydrogen peroxide is

Options

A. `-1`
B. `+1`
C. 0
D. `-2`

Answer

To determine the oxidation state of oxygen in hydrogen peroxide (H₂O₂), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Chemical Formula**:
The chemical formula for hydrogen peroxide is H₂O₂.

2. **Assign Oxidation States**:
We know that the oxidation state of hydrogen (H) is typically +1.

3. **Set Up the Equation**:
Let the oxidation state of oxygen (O) be represented as \( x \). In hydrogen peroxide, there are two oxygen atoms, so we can express the total contribution of oxygen to the oxidation state as \( 2x \).

4. **Write the Overall Charge Equation**:
Since hydrogen peroxide is a neutral molecule, the sum of the oxidation states must equal zero. Therefore, we can set up the equation:
\[ 2(\text{oxidation state of H}) + 2(\text{oxidation state of O}) = 0 \]
Substituting the known oxidation state of hydrogen:
\[ 2(+1) + 2x = 0 \]

5. **Simplify the Equation**:
This simplifies to:
\[ 2 + 2x = 0 \]

6. **Solve for \( x \)**:
Rearranging the equation gives:
\[ 2x = -2 \]
Dividing both sides by 2 results in:
\[ x = -1 \]

7. **Conclusion**:
The oxidation state of oxygen in hydrogen peroxide (H₂O₂) is -1.

### Final Answer:
The oxidation state of oxygen in hydrogen peroxide (H₂O₂) is -1.

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