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When excess of dilute NH4 OH is added to...

When excess of dilute `NH_4 OH` is added to an aqueous solution of copper sulphate, an intense blue colour is obtained. This is due to the presence of

A

`CuSO_(4)`

B

`Cu(OH)_(2)`

C

`[Cu(NH_(3))_(4)]^(2+)`

D

`(NH_(4))_(2)SO_(4)`

Text Solution

Verified by Experts

`CuSO_(4) +4NH_(4)OH to underset("Intense blue colour")([Cu(NH_(3))_(4)]^(2+)` +SO_(4)^(2-)` +2H_(2)O`
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