JEE Main 2003 — Coordination Compounds Question with Solution
From: AIEEE 2003
Question
Ammonia forms the complex ion [Cu(NH3)4]2+ with copper ions in alkaline solutions but not in acidic solutions. What is the reason for it?
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Show full solutionCorrect option: A
Correct answer
AIn acidic solutions protons coordinate with ammonia molecules forming ions and NH3
molecules are not available
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This is a previous-year question from JEE Main 2003, covering the Coordination Compounds chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.