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  • The silver complex formed during cyanide process is  Option: 1 <img alt="\begin{aligned} & \mathrm{Na}_2[\mathrm{Ag}(\mathrm{CN})]

The silver complex formed during cyanide process is

 

Option: 1

\begin{aligned} & \mathrm{Na}_2[\mathrm{Ag}(\mathrm{CN})] \\ \end{aligned}


Option: 2

\begin{aligned} & \mathrm{Na}[\mathrm{AgCN}] \\ \end{aligned}


Option: 3

\begin{aligned} & \mathrm{Na}_2\left[\mathrm{Ag}(\mathrm{CN})_2\right] \\ \end{aligned}


Option: 4

\begin{aligned} & \mathrm{Na}\left[\mathrm{Ag}(\mathrm{CN})_2\right] \end{aligned}


Answers (1)

best_answer

Cyanide process is used for the extraction of Au and Ag. Ag and Au are treated with NaCN in the presence of oxygen and water to form soluble cyanides.

During cyanide process \mathrm{Na}\left[\mathrm{Ag}(\mathrm{CN})_2\right] is formed 

4 \mathrm{Ag}+8 \mathrm{NaCN}+2 \mathrm{H}_2 \mathrm{O}+\mathrm{O}_2 \rightarrow 4 \mathrm{Na}\left[\mathrm{Ag}(\mathrm{CN})_2\right]+4 \mathrm{NaOH}

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chirag

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