PDF chapter test TRY NOW
1. Why do we store silver chloride in dark coloured bottles?
Silver chloride is a compound that decomposes easily in a process. It quickly reacts with light, losing its property and producing silver and chlorine gas. So silver chloride is stored in dark coloured bottles.
2. A silver article generally turns black when kept in the open for a few days. The article when rubbed with toothpaste again starts shining.Name the black substance formed and give its chemical formula.
The silver article turns black when kept in the air because the silver article reacts with sulphur compounds such as present in the air.
\(2Ag\) + \(H_2S\) → \(Ag_2S\) + \(H_2\)
The phenomenon is called corrosion. It is called tarnishing of silver.
The black substance formed is sulphide.
Register for free to see more content