Explain the following observations.
a) Silver chloride turns grey when exposed to sunlight
b) Adding water to calcium oxide increases temperature.
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Silver chloride turns grey when kept in sunlight. This is because a photolytic decomposition reaction takes place where the white silver chloride decomposes in the presence of sunlight to form white silver and chlorine gas which escapes.
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Observation: White silver chloride turns grey in sunlight because silver metal is formed. ... It decomposes in presence of sunlight to form silver metal and chlorine gas. Conclusion: Decomposition of silver chloride in presence of sunlight is photochemical decomposition reaction.
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