what change of colour is observed when white silver chloride is left expossed to sunlight
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Silver chloride (AgCl) is white in colour and elemental silver (Ag) is grey in colour. Hence, the colour change observed when white silver chloride is left exposed in sunlight is from white to grey and the type of chemical reaction is photolytic decomposition reaction or photolysis.
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When white colour silver chloride is exposed to sunlight, it turns grey as it decomposes to silver and chlorine. This is a decomposition reaction and is used in black and white photography.
2AgCl sunlight. 2Ag + Cl2
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