Question

What coating develops on the silver ornaments after a period of time for which disease turn into black?

Answer 1

Answer:

the coating of arsenic is given to the silver ornaments from it after a period of time for which it disease turn intro black .

Answer 2

Answer:

Silver Sulfide is formed on the silver ornaments due to corrosion.

Explanation:

The chemical formula of silver sulfide is $A g_{2} S$. When silver is exposed to air and sulfur for along time, a chemical reaction takes place between silver and sulfur, also known as tarnishing of silver.

Therefore, corrosion takes place which results in the formation of a black layer in its surface known as silver sulfide. It is usually black in color. After removing the layer of silver sulfide original silver surface can be restored. The tarnished silver can be easily cleaned with aluminium foil, hot water, and baking soda.