Multiple choice

Assertion: Ammonia forms the complex ion [Cu(NH3)4]+2 with copper ions in alkaline solution but not in acidic solution. Reason: In acidic solution, hydration protects copper ions.

  1. Both A and R is true and R is the correct explanation of A.

  2. Both A and R is true but R is not the correct explanation of A.

  3. A is true but R is false.

  4. A is false but R is true.

  5. Both A and R is false.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In acidic solution, NH3 forms a bond with H+ to give NH4+ ion which do not have a lone pair on N to act as a ligand because this ammonia forms the complex ion [Cu(NH3)4]+2 with copper ions in alkaline solution but not in acidic solution, so this option is correct.

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