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The most important copper oxide containi...

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:

A

Solution (A) contains coloured species

B

Solution (B) contains paramgnetic species

C

Solution (B) contains colcurless species

D

Solution (B) contains c0-ordination species

Text Solution

Verified by Experts

The correct Answer is:
B
`Cu_(2)(OH)_(2)(CO_(3))+2H_(2)SO_(4)rarr2underset((A))(CuSO_(4))+CO_(2)+H_(2)O`
`CuSO_(4)+2KCNrarrK_(2)SO_(4)+Cu underset((yellow))((CN)_(2))darr`
`Cu(CN)_(2)rarrCuCNdarr+(CN)_(2)uarr`
`CuCN+.^(-)CNrarr[Cu underset((B))((CN)_(4))]^(3-)`
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