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  • The metal which is extracted by oxidation and subsequent reduction from its ore is:  Option: 1 <img alt="\mathrm{Ag}" src="https://ent

The metal which is extracted by oxidation and subsequent reduction from its ore is:

 

Option: 1

\mathrm{Ag}


Option: 2

\mathrm{Fe}


Option: 3

\mathrm{Cu}


Option: 4

\mathrm{Al}


Answers (1)

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\begin{aligned} & 4 \mathrm{Ag}(\mathrm{s})+8 \mathrm{CN}^{-}(\mathrm{aq})+2 \mathrm{H}_2 \mathrm{O}(\mathrm{aq})+\mathrm{O}_2(\mathrm{~g}) \rightarrow 4\left[\mathrm{Ag}(\mathrm{CN})_2\right]_{(\mathrm{aq})}^{-}+4 \mathrm{OH}^{-}(\mathrm{aq}) \\ & 2\left[\mathrm{Ag}(\mathrm{CN})_2\right]_{(\mathrm{aq})}^{-}+\mathrm{Zn}(\mathrm{s}) \rightarrow 2 \mathrm{Ag}(\mathrm{s})+\left[\mathrm{Zn}(\mathrm{CN})_4\right]_{(\mathrm{aq})}^{-2} \end{aligned}

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HARSH KANKARIA

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