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  • I need help with The electrolytes usually ued in the electoplating of gold and silver respectively are:

The electrolytes usually  ued in the electoplating of gold and silver respectively are:

  • Option 1)

    \left [ Au\left ( NH_{3} \right )_{2} \right ]^{+}and\left [ Ag\left ( CN \right ) _{2}\right ]^{-}

     

     

     

  • Option 2)

    \left [ Au\left ( OH \right )_{4} \right ]^{-}and\left [ Ag\left ( OH \right ) _{2}\right ]^{-}

  • Option 3)

    \left [ Au\left ( CN\right )_{2} \right ]^{-}and\left [ Ag\left ( CN\right ) _{2}\right ]^{-}

  • Option 4)

    \left [ Au\left ( CN\right )_{2} \right ]^{-}and\left [ Ag\left ( Cl\right ) _{2}\right ]^{-}

Answers (1)

best_answer

 

Electrolytic Refining -

Many of the metals such as Cu,Au,Ag,Al,Hb etc are purified by this method.

- wherein

The impure metal is made anode while a thin sheet of pure metal acts as a cathode. 

 

As we have learned in electroplating,

The electrolytes which are used for the electroplating of gold and silver are -

\left [ Au\left ( CN \right )_{2}\right ]^{-} \ \ and \ \ \left [ Ag\left ( CN \right )_{2}\right ]^{-}


Option 1)

\left [ Au\left ( NH_{3} \right )_{2} \right ]^{+}and\left [ Ag\left ( CN \right ) _{2}\right ]^{-}

 

 

 

Option 2)

\left [ Au\left ( OH \right )_{4} \right ]^{-}and\left [ Ag\left ( OH \right ) _{2}\right ]^{-}

Option 3)

\left [ Au\left ( CN\right )_{2} \right ]^{-}and\left [ Ag\left ( CN\right ) _{2}\right ]^{-}

Option 4)

\left [ Au\left ( CN\right )_{2} \right ]^{-}and\left [ Ag\left ( Cl\right ) _{2}\right ]^{-}

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