Write down the reactions involved in the extraction of `Pb`. What of the oxidation number of lead in litharge ?

Answer

`{:(2PbS +3O_(2) rarr 2PbO +2SO_(2)uarr,),(PbS + 2O_(2) rarr PbSO_(4),):}}` Roasting
The roasted mineral is smelted intol lead.
`{:(2PbO+PbS rarr 3Pb + 3SO_(2)uarr,),(PbSO_(4) +PbS rarr 3Pb +2SO_(2),):}}` Smelting
This lead is purified by any suitable method. In litharge `(PbO)` oxidation state of lead is `+2`.