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Copper is the most noble among the first...

Copper is the most noble among the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcopyrite `(CuFeS_(2))`, cuprite `(Cu_(2)O)`, copper glance `(Cu_(2)S)` and malachite `[CyCO_(3).Cu(OH)_(2)]`. 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 ironand self-reduction.
Partial roasting of chalcopyrite produces

A

`Cu_(2)S` and FeO

B

`Cu_(2)` and FeO

C

CuS and `Fe_(2)O_(3)`

D

`Cu_(2)O " and " F_(2)O`

Text Solution

Verified by Experts

The correct Answer is:
A
`2CuFeS_(2)+4O_(2) overset("heat") to Cu_(2)S+2FeO+3SO_(2)`
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Copper is the most noble of the first transition metals and occurs in small deposits in several countries. Ores 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)) . Howerver 80% of the world copper production comes from the ore chalcopyrites (CuFeS_(2)) the extraction of copper from chalcopyrites involves partial roasting of iron and self reduction. Q. Partial roasting of chalcopyrites with silica added to it, produces,

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Knowledge Check

  • Copper is the most noble among the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcopyrite (CuFeS_(2)) , cuprite (Cu_(2)O) , copper glance (Cu_(2)S) and malachite [CyCO_(3).Cu(OH)_(2)] . 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 ironand self-reduction. Iron is removed from chalcopyrite as

    A
    FeO
    B
    FeS
    C
    `Fe_(2)O_(3)`
    D
    `FeSiO_(3)`

  • Copper is the most noble among the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcopyrite (CuFeS_(2)) , cuprite (Cu_(2)O) , copper glance (Cu_(2)S) and malachite [CyCO_(3).Cu(OH)_(2)] . 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 ironand self-reduction. In self-reduction, the reducing species is

    A
    S
    B
    `O^(2-)`
    C
    `S^(2-)`
    D
    `SO_(2)`

  • 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

    A
    `Cu_(2)S` and `FeO`
    B
    `Cu_(2)O` and `FeO`
    C
    `CuS` and `Fe_(2)O_(3)`
    D
    `Cu_(2)O` and `Fe_(2)O_(3)`

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