Question

It has been noticed that silverware becomes black faster today than it did fifty years ago. What can be the reason for this?

Answer 1

Tarnishing of silver is due to hydrogen sulphide gas which is released due to pollution.
4Ag+o₂+2H₂S→ 2Ag₂S+2H₂O
so because of pollution which is more nowadays,we see silver articles getting tarnished(black coating).

Answer 2

Answer:

hi mate ,

Ans: Silverware becomes black faster today than it did fifty  

years ago because of air pollution. Nowadays, air is polluted  

with sulphur compounds such as hydrogen sulphide. Silver  

reacts with it to form a black coating of silver sulphide.

hope this helps