The oxidising and reducing agents respectivel | vedclass

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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)

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$O_2, Zn$ dust

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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.

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

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