Question

A white colour solution in a China dish is exposed to sunlight a grey deposit is left behind Explain why

Answer 1

The solution is as follows:

1. Th white colour solution is of AgBr.

2. On exposure to sunlight, Ag is formed which is grey in colour.

3. The reaction is as follows:

2 AgBr (aq) $\stackrel{sunlight}{\to }$ 2 Ag(s) + Br₂(g)