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Ammonia forms the complex with copper ions in alkaline solution but not in acid solution. The reason for it is:
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a
in alkaline solution Cu(OH)2 is precipitated which is soluble in excess of alkali
b
in acidic solution protons coordinates with ammonia molecule forming NH4+ ions and NH3 molecules are not available.
c
copper hydroxide is amphoteric
d
in acidic solution hydration protects Cu2+ ions
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Correct option is B
It is a reason for given fact.Similar Questions
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