1.

Copper is the most noble of the first row transition. Ores of copper include chalcanthite (CuSO_(4).5H_(2)O), atacamite (Cu_(2)Cl(OH)_(3)). However, 80% of the world copper production comes from the ore chalcopurite (CuFeS_(2)) The extraction of copper from chalcopyrite involves partial roasting of iron and sefl-reduction. In self-reduction, the reduction species is

Answer»

S
`O^(2-)`
`S^(2-)`
`SO_(2)`

SOLUTION :`S^(2-)` ACTS as reducing species in SELF REDUCTION REACTION `2Cu_(2)O+Cu_(2)S to 6 Cu+SO_(2)`


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