The strength of `H_2 O_2` (in g/litre) in 11.2 volume solution of `H_2 O_2 ` is

Explanation

To find the strength of \( H_2O_2 \) in grams per liter for an 11.2 volume solution, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Volume Strength**:
- A solution labeled as "11.2 volume" means that 1 liter of this solution can liberate 11.2 liters of oxygen gas (\( O_2 \)) at Normal Temperature and Pressure (NTP).

2. **Reaction of Hydrogen Peroxide**:
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