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Subjects
Class 10ScienceChemical Substances – Nature and BehaviourChemical Reactions and EquationsExpertLevel 4

Which product is mainly responsible for silver chloride turning grey on exposure to light?

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Answer and explanation

Correct answer: Silver

In the presence of light, silver chloride undergoes photodecomposition: \(2\mathrm{AgCl}\xrightarrow{\text{light}}2\mathrm{Ag}+\mathrm{Cl_2}\). The metallic silver formed is grey, so AgCl appears grey. Chlorine is also produced, but it does not cause the grey colour.

Tags

scienceclass 10chemical reactionsphotodecompositionsilver chloridecolour change

Frequently asked questions

What is the correct answer to this question?

Silver

Why is this the correct answer?

In the presence of light, silver chloride undergoes photodecomposition: \(2\mathrm{AgCl}\xrightarrow{\text{light}}2\mathrm{Ag}+\mathrm{Cl_2}\). The metallic silver formed is grey, so AgCl appears grey. Chlorine is also produced, but it does not cause the grey colour.

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.

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