Question

Explain the following observations.
a) Silver chloride turns grey when exposed to sunlight
b) Adding water to calcium oxide increases temperature.​

Answer 1

Answer:

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.

Answer 2

Answer:

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.