Question

Which among the following statements is correct for the given redox reaction:

${\text{Pb}}_3{\text{O}}_4+8\text{HCl}\stackrel{\text{Heat}}{\to }3{\text{PbCl}}_2+{\text{Cl}}_2+4{\text{H}}_2\text{O}$

• A. I only
• B. II only
• C. I & III
• D. II & IV

Answer 1

The correct option is C I & III

A substance is said to be oxidised if it either gains oxygen atom or loses hydrogen atom.

A substance is said to be reduced if it either loses oxygen atom or gains hydrogen atom.

In the given reaction, $\text{HCl}$ is oxidised to ${\text{Cl}}_2$ by losing hydrogen whereas ${\text{Pb}}_3{\text{O}}_4$ is reduced to ${\text{PbCl}}_2$ by losing oxygen.