Question

Identify the correct statements from the following: I. \( H_2O_2 \) oxidizes PbS to \( PbSO_4 \)
II. \( H_2O_2 \) is used in the industrial preparation of sodium perborate
III. \( H_2O_2 \) is insoluble in water

• A. I, II only
• B. I, III only
• C. II, III only
• D. I, II, III

Hint:

- \( H_2O_2 \) is a strong oxidizing agent and can oxidize PbS to PbSO_4.
- It is used industrially in the production of sodium perborate.
- \( H_2O_2 \) is soluble in water due to hydrogen bonding.

Answer 1

The Correct Option is A

Step 1: Evaluating Each Statement
- Statement I: Oxidation of PbS by \( H_2O_2 \)
- Lead sulfide (\( PbS \)) reacts with hydrogen peroxide to form lead sulfate (\( PbSO_4 \)): \[ PbS + 4 H_2O_2 \rightarrow PbSO_4 + 4 H_2O \]
- This is a well-known oxidation reaction.
- Statement I is correct.
- Statement II: Industrial Use in Sodium Perborate
- Hydrogen peroxide is widely used in the industrial production of sodium perborate (\( NaBO_3 \)), which is used in detergents.
- Statement II is correct.
- Statement III: Solubility in Water
- Hydrogen peroxide (\( H_2O_2 \)) is highly soluble in water due to its hydrogen bonding capability.
- Statement III is incorrect. Step 2: Conclusion Only Statements I and II are correct. Thus, the correct answer is \( \mathbf{(1)} \) I, II only.