(C) The extraction of silver from argentite $(Ag_2S)$ involves the following steps: $1$. Leaching: $4Ag + 8CN^- + 2H_2O + O_2 \longrightarrow 4[Ag(CN)

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(C) The extraction of silver from argentite $(Ag_2S)$ involves the following steps: $1$. Leaching: $4Ag + 8CN^- + 2H_2O + O_2 \longrightarrow 4[Ag(CN)_2]^- + 4OH^-$. Here,$O_2$ acts as an oxidising agent. $2$. Precipitation: $2[Ag(CN)_2]^- + Zn \longrightarrow 2Ag + [Zn(CN)_4]^{2-}$. Here,$Zn$ dust acts as a reducing agent. Thus,$O_2$ is the oxidising agent and $Zn$ dust is the reducing agent.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Reduction to free Metal

Medium

The oxidising and reducing agents respectively for the cyanide extraction of silver from argentite ore are

TS EAMCET 2018 All TS EAMCET

A
$O_2, CO$
B
$HNO_3, CO$
C
$O_2, Zn$ dust
D
$HNO_3, Zn$ dust

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General Principles and Processes of Isolation of Elements

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Reduction to free Metal

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The oxidising and reducing agents respectively for the cyanide extraction of silver from argentite ore are

Similar Questions

Which is the main reducing agent for extraction in a blast furnace?

Why is the reduction of a metal oxide easier if the metal formed is in liquid state at the temperature of reduction?

Which statement is correct?

Which of the following conditions favours the reduction of a metal oxide to metal?

For the formation of which compound in the Ellingham diagram does $\Delta G^{\circ}$ become more and more negative with an increase in temperature?

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