(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

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

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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 one of the following electrolytes is used in Down's process for the extraction of sodium metal?

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Which of the following fluxes is used to remove acidic impurities during metallurgy?

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