Question

$H_{2}S$ reacts with lead acetate to form a black compound which reacts with $H_2{O}_2$ to form another compound. The colour of this another compound is:

• A. pink
• B. black
• C. yellow
• D. white

Answer 1

The correct option is D white

The reaction takes place as:

$H_{2}S+(C{H}_{3}COO{)}_{2}Pb\to \underset{Black}{PbS}+2C{H}_{3}COOH$.

$PbS+4H_2{O}_2\to \underset{white}{PbS{O}_4}+4H_{2}O$.

The colour of compound formed is white.