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Write the chemical equations involved in the extraction of lead from galena by self-reduction process. |
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Answer» Lead is mainly extracted from sulphide ore called galena. Roasting is done followed by reduction with carbon. Self-reduction finally takes place. `2PbS + 3O_(2) rarr 2PbO + SO_(2)` `PbS + 2O_(2) rarr PbSO_(4)` `PbSO_(4) + PbO rarr 2Pb + 2SO_(2)` `PbS + 2PbO rarr 3Pb + SO_(2)`. |
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