Question

PbS reacts with ozone and forms PbSO4 .As per the balanced equation, molecules of ozone required for every one molecule of PbS is/ are?

Answer 1

Explanation:

There are two possible reactions of PbS with ozone that forms overall lead sulphate that is $PbSO_4$.

$PbS + 4O_3 \rightarrow PbSO_4 + 4O_2$

$3PbS + 4O_3 \rightarrow 3PbSO_4$

So, we can say that in the excess of PbS, the $O_2$ formed will further react with PbS to form $PbSO_4$ as the final product of the reaction whereas in the limited amount of PbS it will form $PbSO_4$ and $O_2$ as the final product of the reaction.