Question

Given below is the chemical equation for the reaction between lead sulphide and hydrogen peroxide.
$PbS+2H_2{O}_2\to PbS{O}_4+4H_{2}O$
Identify the correct statement regarding the given reaction.

• A. Lead sulphate is oxidised and water is reduced.
• B. Lead sulphide is reduced and hydrogen peroxide is oxidised.
• C. Lead sulphate is reduced and water is oxidised
• D. Lead sulphide is oxidised and hydrogen peroxide is reduced.

Answer 1

The correct option is D Lead sulphide is oxidised and hydrogen peroxide is reduced.

• When lead sulphide (PbS) coverts to lead sulphate $PbS{O}_4$ then loss of 2 electrons happen. So it is oxidised.
• When Hydrogen peroxide $\left(H_2{O}_2\right)$ converts to water. In that hydrogen gains 2 electrons. So, it is reduced.
• Therefore the correct answer is Option B.