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Question: Answered & Verified by Expert
Ammonia is used in detection of Cu2+ ion because
Chemistryd and f Block ElementsNEET
Options:
  • A aqueous solution of NH3 reacts with Cu2+ ion to form deep blue coloured complex
  • B NH3 reacts with Cu2+ ion to give blue precipitate of CuO
  • C aqueous solution of NH3 reacts with Cu2+ ion to form white coloured complex
  • D NH3 reacts with Cu2+ ion to give green precipitate
Solution:
1551 Upvotes Verified Answer
The correct answer is: aqueous solution of NH3 reacts with Cu2+ ion to form deep blue coloured complex
Ammonia is used in detection of Cu2+ ion because aqueous solution of NH3 reacts with Cu2+ ion to form deep blue coloured complex.
Cu(aq)2++4NH3(aq)→[Cu(NH3)4](aq)2+Deep blue

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