silver articles are tarnished after few  days.

Asked by arajeevshashank | 10th Aug, 2018, 09:42: PM

Expert Answer:

Silver gets tarnished when exposed to the atmosphere which contains pollutant H2S and forms a black coating of Ag2S.

2Ag(s) + H2S(g) → Ag2S(s) + H2(g)

Answered by Ramandeep | 11th Aug, 2018, 07:43: PM