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.