The white colour of silver chloride turning grey in light is evidence of what?
Answer and explanation
Correct answer: Formation of silver metal
In the presence of light, silver chloride undergoes photochemical decomposition: \(2\mathrm{AgCl}(s) \xrightarrow{\text{light}} 2\mathrm{Ag}(s)+\mathrm{Cl}_2(g)\). The silver metal formed is grey, so the white silver chloride appears grey. This is not due to the formation of silver oxide; light causes silver ions to be reduced to silver metal.
Frequently asked questions
What is the correct answer to this question?
Formation of silver metal
Why is this the correct answer?
In the presence of light, silver chloride undergoes photochemical decomposition: \(2\mathrm{AgCl}(s) \xrightarrow{\text{light}} 2\mathrm{Ag}(s)+\mathrm{Cl}_2(g)\). The silver metal formed is grey, so the white silver chloride appears grey. This is not due to the formation of silver oxide; light causes silver ions to be reduced to silver metal.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
