Question

Ravi's grandmother gifted him a glass made up of silver. She kept the glass wrapped by a polythene
but Ravi removed the polythene from it. After some days, he observed that it turns black in colour.
This is because of the formation
a) Silver sulphite
b) Silver sulphide
c) Silver carbonate
d) Silver oxide​

Answer 1

Answer:

silver oxide

explanation: when silver is exposed to air it geys oxidised due to the moist contant in the air and oxygen in the air. it gets oxidised and it forms silver oxide

Answer 2

Answer:

The answer is option (b) Silver sulfide

Explanation:

When silver is placed in the air, the object turns black because the silver element reacts with sulfur compounds such as hydrogen sulfide which is present in the air.

             $Ag +H_2S$   → $Ag_2S +H_2$

           Silver                 Silver Sulphide

The silverware tarnishes because of the formation of a Silver sulfide reaction. Corrosion is the term for this phenomenon. Silver tarnishing is a term used to describe this process happening in silver. Silver sulfide is the dark material obtained.

Silver sulfide is insoluble in all solvents. However, it can be destroyed with powerful acids.

Silver sulfide is widely used as a photosensitizer in photography.