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Give reason why: White coloured AgCl turns grey when kept in sunlight.

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Give reason why:

White coloured AgCl turns grey when kept in sunlight.

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White silver chloride turns grey in sunlight due to the decomposition of silver chloride into silver and chlorine by light.

The reaction that takes place is:

2AgCl + sunlight → 2Ag + Cl2

The above reaction is an endothermic reaction

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