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Copper is the most noble of first row tr...

Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite `(CuSO_(4).5H_(2)O)`, atacanite `[Cu_(2)Cl(OH)_(3)]`, cuprite `(Cu_(2)O)`, copper glance `(Cu_(2)S)`, and malachite `[Cu_(2)(OH)_(2)CO_(3)]`. However, `80 %` of the world copper production comes from the ore chalcopyrite `(CuFeS_(2))`. The extraction of copper from chalcopyrite involves partial roasting, removal of iron and self-reduction.
In self-reduction, the reducing species is.

A

S

B

` O ^(2-) `

C

`S^(2-) `

D

`SO_2`

Text Solution

Verified by Experts

The correct Answer is:
C
During self - reduction, ` Cu _2 S`, i.e., ` S ^( 2 -) ` acts as a reducing species and hence reduces ` Cu _ 2 O ` to copper metal.
` overset (2-)S + 2 Cu_ 2 O to 4 Cu + SO _ 2. `
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Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ors of copper include chalcanthite (CuSO_(4).5H_(2)O) , atacamite (Cu_(2)Cl(OH)_(3)) , cuprite (Cu_(2)O) , copper glance (Cu_(2)S) and malachite (Cu_(2)(OH)_(2)CO_(3)) . However , 80% of the world copper production comes from the ore chalcopyrite (CuFeS_(2)) . the extraction of copper from chalcopyrite involves partial roasting, removla of iron and self- reduction. In self- reduction, the reducing species is

Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite (CuSO_(4).5H_(2)O) , atacanite [Cu_(2)Cl(OH)_(3)] , cuprite (Cu_(2)O) , copper glance (Cu_(2)S) , and malachite [Cu_(2)(OH)_(2)CO_(3)] . However, 80 % of the world copper production comes from the ore chalcopyrite (CuFeS_(2)) . The extraction of copper from chalcopyrite involves partial roasting, removal of iron and self-reduction. Iron is removed from chalcopyrite as.

Copper is the most noble of first row transition metals and occurs in small deposits in serveral countries. Ores of copper include chalcanthite (CuSO_(4).5H_(2)O) , atacanite [Cu_(2)Cl(OH)_(3)] , cuprite (Cu_(2)O) , copper glance (Cu_(2)S) , and malachite [Cu_(2)(OH)_(2)CO_(3)] . However, 80 % of the world copper production comes from the ore chalcopyrite (CuFeS_(2)) . The extraction of copper from chalcopyrite involves partial roasting, removal of iron and self-reduction. Partial roasting of chalcopyrite produces

Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ors of copper include chalcanthite (CuSO_(4).5H_(2)O) , atacamite (Cu_(2)Cl(OH)_(3)) , cuprite (Cu_(2)O) , copper glance (Cu_(2)S) and malachite (Cu_(2)(OH)_(2)CO_(3)) . However , 80% of the world copper production comes from the ore chalcopyrite (CuFeS_(2)) . the extraction of copper from chalcopyrite involves partial roasting, removla of iron and self- reduction. Iron is removed from chalcopyrite as

Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ors of copper include chalcanthite (CuSO_(4).5H_(2)O) , atacamite (Cu_(2)Cl(OH)_(3)) , cuprite (Cu_(2)O) , copper glance (Cu_(2)S) and malachite (Cu_(2)(OH)_(2)CO_(3)) . However , 80% of the world copper production comes from the ore chalcopyrite (CuFeS_(2)) . the extraction of copper from chalcopyrite involves partial roasting, removla of iron and self- reduction. Partial roasting of chalcopyrite produces

Copper is the most noble of the first row transition metals and occurs in small deposits in several coun- tries. Ores of copper include chalcanthite (CuSO_4. 5H_2O) atacamite (Cu_2Cl(OH)_3) , cuprite (Cu_2O) , copper glance (Cu_2S ) and malachite (Cu_2(OH)_2CO_3) . However, 80% of the world copper production comes from the ore chalcopyrite (CuFeS_2) . The extraction of copper from chalcopyrite involves partial roasting, revoval of iron and self -reduction. In self -reduction, the reducing species is