Question

Take about 2gsilver chloride in a china dish. What is its colour? place this china dish in sunlight for some time. Observe the colour of the silver chloride after some time. What happens? Why does this happen? Give a brief description of this activity.

Answer 1

Silver chloride is white in colour.
After exposure in sunlight, the white solid turns into a grey coloured solid.
This occurs due to photolysis of silver chloride into silver metal and greenish-yellow coloured chlorine gas.

2AgCl $\to$ 2Ag + Cl₂