Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • NCERT
  • Silver articles become black on prolonged exposure to air. This is due to the formation of (a) Ag3N (b) Ag2O (c) Ag2S (d) Ag2S and Ag3N

Silver articles become black on prolonged exposure to air. This is due to the formation of

(a) Ag3N
(b) Ag2O
(c) Ag2S
(d) Ag2S and Ag3N

Answers (1)

best_answer

Ans. (c)

Silver article become black because silver reacts with H2S gas present in air to form black coating of Ag2S.
2 Ag + O2 → Ag2O
4 Ag + 2 H2S + 2O2 → 2Ag2S + 2 H2O

Ag2O is brown in colour and of Ag2S is black.

Therefore option (C) is correct

Posted by

infoexpert27

View full answer

Similar Questions

Latest Question