When an alloy of silver and lead is rich in s | vedclass

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(B) Cupellation is the process used when the alloy of $Ag$ and $Pb$ is rich in $Ag$. In this method,the impure metal is heated in a cupel (an oval-sha

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Cupellation process is used

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(B) Cupellation is the process used when the alloy of $Ag$ and $Pb$ is rich in $Ag$. In this method,the impure metal is heated in a cupel (an oval-shaped crucible made of bone ash or cement). $A$ blast of air is passed over the molten mass. The $Pb$ impurities get oxidized to $PbO$ and are removed with the blast of air,leaving behind pure $Ag$.

When an alloy of silver and lead is rich in silver,which process is used for purification?

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