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Copper sulphate is prepared by blowing a...

Copper sulphate is prepared by blowing a current of air through copper scrap and dilute `H_(2)SO_(4)`. Dilute `HNO_(3)` is also added`:`

A

to oxidise copper to `Cu^(2+)` which then form `CuSO_(4)` with dilute `H_(2)SO_(4)`

B

to oxidise `Fe^(2+)` to iron `(III)` sulphate, which remains in solution after crystallisation of `CuSO_(4)`

C

to speed up the ionisation of `H_(2)SO_(4)` to give `SO_(4)^(2-)` ions

D

which combines with `H_(2)SO_(4)` to give a very strong oxidising mixture and oxidise Cu to `Cu^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Fe(OH)_(3) & Al(OH)_(3)` can be separated by NaOH
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