Question
Question: Ammonia forms the complex ion [Cu(NH3)4]2+ with copper ions in the alkaline solutions but not in aci...
Ammonia forms the complex ion [Cu(NH3)4]2+ with copper ions in the alkaline solutions but not in acidic solutions. What is the Statement-2 for it ?
A
In acidic solutions hydration protects copper ions
B
In acidic solutions protons co-ordinate with ammonia molecules forming NH4+ ions and NH3 molecules are not available.
C
In alkaline solutions insoluble Cu(OH)2 is precipitated which is soluble in excess of any alkali
D
Copper hydroxide is an amphoteric substance.
Answer
In acidic solutions protons co-ordinate with ammonia molecules forming NH4+ ions and NH3 molecules are not available.
Explanation
Solution
The pair of electrons present with nitrogen will not be available to be donated as H+ will consume that one.