How is leaching carried out in case of low grade copper ores?

Explanation

The leaching of low grade copper ores is carried out with acids in presence of air when copper goes into solution as `Cu^(2+)` ions. Thus,
`2Cu_(s)+2H_2SO_4+O_2to2CuSO_4+2H_2O_(1)`
or `Cu(s)+2H^(o+)+(1)/(2)O_2toCu^(2+)+H_2O_(1)`