In the cyanide process involving the extracti | vedclass

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

Question

(B) In the cyanide process for the extraction of silver,the ore is treated with a dilute solution of $NaCN$ in the presence of air to form a soluble c

Vedclass · Accepted Answer

reducing agent

Vedclass · Answer

(B) In the cyanide process for the extraction of silver,the ore is treated with a dilute solution of $NaCN$ in the presence of air to form a soluble complex: $4Ag + 8CN^- + 2H_2O + O_2 \rightarrow 4[Ag(CN)_2]^- + 4OH^-$. Zinc is then added to this solution to displace silver from the complex: $2[Ag(CN)_2]^- + Zn \rightarrow [Zn(CN)_4]^{2-} + 2Ag$. In this reaction,$Zn$ is oxidized to $Zn^{2+}$ and $Ag^+$ is reduced to $Ag$. Therefore,zinc acts as a reducing agent.

In the cyanide process involving the extraction of silver,zinc is used industrially as a(an)

Similar Questions

Extraction of aluminium from bauxite ore,reduction is carried out by

Case hardening is a process of heating steel in an atmosphere of:

The Ellingham diagram represents:

$Ni$ anode is used in the electrolytic extraction of

The best quality of steel is manufactured by which of the following processes?

Vedclass Test Series

Exam Paper Generator

Online Exam Module