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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.
Partial roasting of chalcopyrite produces

A

`FeSiO_(3)`

B

`Fe_(2)O_(3)`

C

`Cu_(2)S`

D

`CuO`

Text Solution

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The correct Answer is:
A, C
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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. In self-reduction, the reducing species is.

In the extraction of copper from its sulfide ore, the metal is formed by the reduction of Cu_2O with

The most important copper oxide containing minerals are azurite {Cu_(3)(OH)_(2)(CO_(3))_(2)} , malachite {Cu_(2)(OH)_(2)(CO_(3))} , cuprite (Cu_(2)O) , tenorite (CuO) . Extraction of copper from these low grade ores involves leaching followed by reduction. Some Cu is obtained just on leaching by dil H_(2)SO_(4) in :

Two important ores of metals are given below Malachite CuCO_(3).Cu(OH)_(2).xH_(2)O Carnallite KCl.MgCl_(2).yH_(2)O What is y-x?

The most important copper oxide containing minerals are azurite {Cu_(3)(OH)_(2)(CO_(3))_(2)} , malachite {Cu_(2)(OH)_(2)(CO_(3))} , cuprite (Cu_(2)O) , tenorite (CuO) . Extraction of copper from these low grade ores involves leaching followed by reduction Malachite ("leached")/("with bacteria") ("solution") Cu can be extracted from solution on treatment with:

The most important copper oxide containing minerals are azurite {Cu_(3)(OH)_(2)(CO_(3))_(2)} , malachite {Cu_(2)(OH)_(2)(CO_(3))} , cuprite (Cu_(2)O) , tenorite (CuO) . Extraction of copper from these low grade ores involves leaching followed by reduction "Azurite" overset(H_(2)SO_(4)(aq))rarrunderset((A))("solution") overset(KCN)rarrpptooverset(KCN)underset((excess))rarrunderset((B))("solution ") Select the INCORRECT statement:

Upon hetaing with Cu_(2)S the regants that give copper metel are (i) CuFeS_(2) (ii) CuO (iii) Cu_(2)O (iv) CuSO_(4)

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