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Class 10ScienceChemical Substances – Nature and BehaviourChemical Reactions and EquationsExpertLevel 3

When white silver chloride g( gCl) is exposed to sunlight, it turns grey. Which product is responsible for this colour change?

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Answer and explanation

Correct answer: Silver metal

Silver chloride undergoes photodecomposition in sunlight: \(2\mathrm{AgCl}\xrightarrow{\text{sunlight}}2\mathrm{Ag}+\mathrm{Cl}_2\). The silver metal formed is grey, so it causes the colour change. Chlorine gas is also a product, but it does not cause the grey appearance.

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scienceclass 10chemical reactionsphotodecompositionsilver chloridechemical equations

Frequently asked questions

What is the correct answer to this question?

Silver metal

Why is this the correct answer?

Silver chloride undergoes photodecomposition in sunlight: \(2\mathrm{AgCl}\xrightarrow{\text{sunlight}}2\mathrm{Ag}+\mathrm{Cl}_2\). The silver metal formed is grey, so it causes the colour change. Chlorine gas is also a product, but it does not cause the grey appearance.

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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