How will you concentrate `H_(2)O_(2)` ? Show difference between structures of `H_(2)O_(2)` and `H_(2)O` by darwing their spatial structures . Also mention three important uses of `H_(2)O_(2)`.

Explanation

To solve the question, we will break it down into three parts: how to concentrate H₂O₂, the structural differences between H₂O₂ and H₂O, and the important uses of H₂O₂.

### Step 1: Concentrating H₂O₂
H₂O₂ (hydrogen peroxide) is typically found in a dilute solution. To concentrate it, we can use the process of distillation. Here’s how it works:

1. **Preparation of H₂O₂**: H₂O₂ can be prepared through the auto-oxidation of 2-ethyl anthraquinol. This involves a reversible reaction where oxygen from the air is reacted with the compound, and hydrogen is added with the help of palladium as a catalyst to produce H₂O₂.

2. **Distillation**: The dilute solution of H₂O₂ (usually around 1% concentration) can be concentrated by heating it and allowing the water (H₂O) to evaporate. The remaining liquid will have a higher concentration of H₂O₂.

### Step 2: Drawing Structural Differences
Next, we will illustrate the spatial structures of H₂O₂ and H₂O.

1. **Structure of H₂O₂**:
- H₂O₂ has a non-linear structure resembling an "open book."
- The bond angles are approximately 94.5° between the O and H atoms, and the O-O bond length is about 147.5 pm.

 *(Imagine a diagram here showing the structure of H₂O₂ with O-O and O-H bonds labeled)*

2. **Structure of H₂O**:
- H₂O has a bent structure with a bond angle of about 104.5°.
- The bond length of the O-H bond is approximately 95.7 pm.

 *(Imagine a diagram here showing the bent structure of H₂O with O-H bonds labeled)*

### Step 3: Important Uses of H₂O₂
H₂O₂ has several important applications:

1. **Antiseptic**: H₂O₂ is commonly used as an antiseptic for minor cuts and abrasions due to its ability to kill bacteria.

2. **Bleaching Agent**: It is widely used in the textile industry for bleaching fabrics and in hair bleaching products.

3. **Disinfectant**: H₂O₂ has mild disinfectant properties and is used in various cleaning products.

4. **Pharmaceutical Applications**: It is also used in the pharmaceutical industry, including the preparation of tartaric acid.

### Summary
To summarize, we can concentrate H₂O₂ through distillation, and we have illustrated the structural differences between H₂O₂ and H₂O. Additionally, we have identified three important uses of H₂O₂.

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