Question

Sulphur dioxide gas turns lead acetate paper black.

• A. True
• B. False

Answer 1

The correct option is B False

Sulphur dioxide reacts with lead acetate paper as follow.

Pb(CH${}_3$COO)${}_2$ + SO${}_2$ $\to$ Pb(SO${}_2$)${}_2$ + (CH${}_3$COO)${}_2$

No black colour substance is formed.

Hence this statement is false.

Hydrogen sulphide turns the colour of lead acetate paper black according to the following reaction

The formation of PbS gives the black colour.