Which of the following statements is`//`are correct about `6.8%` stregnth of `H_2O_2`.

Options

A. Its normality is 4 N
B. Its molarity is 2 M.
C. Its volume strength is 22.4 V.
D. Volume strength `=11.2xxM`.

Explanation

To determine which statements are correct about a 6.8% strength of H₂O₂ (hydrogen peroxide), we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Understanding the Percentage Strength**:
- A 6.8% solution of H₂O₂ means that there are 6.8 grams of H₂O₂ in 100 mL of solution.

2. **Calculating Normality**:
- The normality (N) of H₂O₂ can be calculated using the formula:
\[ \text{Normality} = \frac{\text{grams of solute}}{\text{molar mass} \times \text{volume in liters}} \times \text{n-factor} \]
- The molar mass of H₂O₂ is approximately 34 g/mol.
- The n-factor for H₂O₂ is 2 because it can release 2 H⁺ ions.
- For 6.8 grams of H₂O₂ in 100 mL (0.1 L):
\[ \text{Normality} = \frac{6.8 \text{ g}}{34 \text{ g/mol} \times 0.1 \text{ L}} \times 2 = \frac{6.8}{3.4} \times 2 = 4 \text{ N} \]
- **Conclusion**: The first statement is correct; the normality is 4 N.

3. **Calculating Molarity**:
- Molarity (M) can be calculated from normality using the formula:
\[ \text{Molarity} = \frac{\text{Normality}}{\text{n-factor}} = \frac{4 \text{ N}}{2} = 2 \text{ M} \]
- **Conclusion**: The second statement is correct; the molarity is 2 M.

4. **Calculating Volume Strength**:
- Volume strength of H₂O₂ is defined as the volume of O₂ gas liberated at STP by 1 volume of the solution.
- 1 N of H₂O₂ corresponds to 5.6 L of O₂. Therefore, 4 N corresponds to:
\[ 4 \text{ N} \times 5.6 \text{ L} = 22.4 \text{ volume} \]
- **Conclusion**: The third statement is correct; the volume strength is 22.4 volume.

5. **Verifying Volume Strength Calculation**:
- Volume strength can also be calculated using the relationship:
\[ \text{Volume Strength} = 11.2 \times \text{Molarity} \]
- Substituting the molarity:
\[ \text{Volume Strength} = 11.2 \times 2 \text{ M} = 22.4 \text{ volume} \]
- **Conclusion**: The fourth statement is also correct; the volume strength is 22.4 volume.

### Final Conclusion:
All statements regarding the 6.8% strength of H₂O₂ are correct.