The cyanide complex of silver formed in the s | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The Mac-Arthur Forrest process is used for the extraction of silver and gold from their ores. In the case of silver,the finely powdered ore is tre

Vedclass · Accepted Answer

$[Ag(CN)_2]^-$

Vedclass · Answer

(A) The Mac-Arthur Forrest process is used for the extraction of silver and gold from their ores. In the case of silver,the finely powdered ore is treated with a dilute solution of sodium cyanide $(NaCN)$ or potassium cyanide $(KCN)$ in the presence of air. The chemical reaction is: $4Ag + 8CN^- + 2H_2O + O_2 \rightarrow 4[Ag(CN)_2]^- + 4OH^-$. The silver is dissolved in the form of the soluble dicyanoargentate$(I)$ complex,$[Ag(CN)_2]^-$. Therefore,the correct option is $A$.

The cyanide complex of silver formed in the silver extraction in Mac-Arthur's Forrest cyanide process is

Similar Questions

On heating a mixture of $Cu_2O$ and $Cu_2S$,the product obtained is:

Copper matte is a mixture of

In the extraction of copper from its sulphide ore,the slag is formed by adding which of the following?

From which of the following is silver obtained by the reaction with $Na[Ag(CN)_2]$?

In metallurgy,flux is a substance used to convert

Vedclass Test Series

Exam Paper Generator

Online Exam Module