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If the impurity in a metal has a greater...

If the impurity in a metal has a greater affinity for oxygen and is more easily oxidised than the matel, then the purification of metal may be carried out by:

A

cupellation

B

electroytic refining

C

zone refining

D

poling

Text Solution

Verified by Experts

The correct Answer is:
A
Cupellation,`Pb`present in `Ag` is removed by cupellation.
`Pb+(1)/(2)O_(2)rarr PbOuarr`
Bacuase `Pb` ahs more affinity for oxygen as compared to `Ag`.
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