Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • Extraction of metals of low reactivity silver

Extraction of metals of low reactivity silver

Answers (1)

Extraction of silver

1) Silver occurs in both combined state as well as in the free state. The important ores of silver are Argentite (Ag2S) copper, silver glance, Horn silver, Ruby silver etc.

2) Silver is extracted from the ore-Argentite (Ag2S)

3) The ore is crushed, concentrated and then treated with sodium cyanide solution.

4) The reaction forms sodium Argento cyanide [Na[Ag(CN)2]].

Ag2S + 4 NaCN → 2 Na [Ag(CN)2] + 2 Ag.

5) This solution of sodium Argento cyanide combined with zinc dust forms tetra Ayano zincate and principle silver. This precipitated silver is called spongy silver.

Zn + 2 Na [Ag(CN)2] → Na2 [Zn(CN)4] + 2 Ag.

6) The spongy silver is fused with potassium nitrate to obtain pure silver. Then the silver obtained is purified by the electrolytic process.

Posted by

Safeer PP

View full answer

Similar Questions

Latest Question