how does NH3 react with the solution of CU 2 +
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it forms a complex ion with NH3 .
Cu2+ + 4NH3 = (Cu(NH3)^4)2+ which is a deep blue coloured solution only in excess of NH4OH.
Cu2+ + 4NH3 = (Cu(NH3)^4)2+ which is a deep blue coloured solution only in excess of NH4OH.
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