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Question: What is the process of leaching in case of low grade copper ores?...

What is the process of leaching in case of low grade copper ores?

A

Leaching is carried out with NaOH and O2O_{2}

B

Leaching is carried out with NaCN.

C

Leaching is carried out with acids in present of O2O_{2}

D

Leaching is carried out by boiling the ore with water.

Answer

Leaching is carried out with acids in present of O2O_{2}

Explanation

Solution

Leaching of low grade copper ores is carried out with acid or bacteria when copper goes into solution as Cu2+Cu^{2 +}ions

Cu2+(aq)+H2(g)→Cu(s)+2H+(aq)C{u^{2 +}}_{(aq)} + H_{2(g)} \rightarrow Cu_{(s)} + 2{H^{+}}_{(aq)}