Question

Which among the following statements are correct for the given redox reaction:
$P{b}_3{O}_4\left(s\right)+8HCl\left(aq\right)\stackrel{Heat}{\to }3PbC{l}_2\left(s\right)+C{l}_2\left(g\right)+4H_{2}O\left(l\right)$
I. $HCl$ is oxidised
II. $HCl$ is reduced
III. $P{b}_3{O}_4$ is reduced
IV. $P{b}_3{O}_4$ is oxidised

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

Answer 1

The correct option is C I & III

$\bullet$ The chemical reaction which involves addition of oxygen or removal of hydrogen or loss of electrons is called oxidation.

$\bullet$ The chemical reaction which involves addition of hydrogen or removal of oxygen or gain of electrons is called reduction.

$\bullet$ In the given reaction, $HCl$ is oxidised to $C{l}_2$ by losing hydrogen whereas $P{b}_3{O}_4$ is reduced to $PbC{l}_2$ by losing oxygen.