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Which of the following compound is forme...

Which of the following compound is formed when copper sulphate solution is treated with an excess of aqueous ammonia?

A

`[Cu(NH_(3))_(4)]_(2)SO_(4)`

B

`[Cu(NH_(3))_(6)]SO_(4)`

C

`[Cu(NH_(3))_(4)]SO_(4)`

D

`[Cu(NH_(4))_(3)]SO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
3
Copper sulpjhate dissolved in excess of ammonia to form soluble deep blue colored complex `[Cu(NH_(3))_(4)]SO_(4)`, tetraamine copper (II) sulphate.
`CuSO_(4)(aq.)+4NH_(4)OH(aq.)rarr[Cu(NH_(3))_(4)]SO_(4)(aq.)+4H_(2)O(l)`
Netural `FeCl_(3)` solution is prepared by treating fresh `FeCl_(3)` solution with dilute `NH_(3)` solution.
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