Question

which method is used in purifying copper and explain the methods

Answer 1

the salt solution method is used in purification of copper metal

Answer 2

the purification of copper
two method are
1 calcination
2 roasting

1 calcination
cuco3 -----heat--- cuo + co2
cuo + c --- cu + co

2 roasting
2cus + 3o2--- 2cuo + 2so2

cuo + c---- cu + co