1.

Which of the following is formed, when copper (II) sulphate is treated with excess ammonia?A. A black precipitateB. A red precipitateC. A deep blue solutionD. A white precipitate turning black

Answer» Correct Answer - C
Tetraamino cupric ion is formed.
`Cu^(+)+4NH_(3)rarr underset("Deep blue")([Cu(NH_(3))_(4)]^(2+))`


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