# Ammonia is a good complexing agent. Explain. - Chemistry

Short Note

Ammonia is a good complexing agent. Explain.

#### Solution

1. The lone pair of electrons on the nitrogen atom facilitates the complexation of ammonia with transition metal ions. Thus, ammonia is a good complexing agent as it forms a complex by donating its lone pair of electrons.
a. $\ce{\underset{\text{(Blue)}}{Cu^2+_{ (aq)}} + 4NH_{3(aq)}->\underset{\text{(Deep blue)}}{[Cu(NH3)4]^2+_{( aq)}}}$
b. $\ce{\underset{\text{(White)}}{AgCl_{(s)}} + 2NH_{3(aq)}->\underset{\text{(Colourless)}}{[Ag(NH3)2]Cl_{( aq)}}}$
2. This reaction is used for the detection of metal ions such as Cu2+ and Ag+.
Concept: Chemistry of Notable Compounds of Elements of Groups 13, 14 and 15
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#### APPEARS IN

Balbharati Chemistry 11th Standard Maharashtra State Board
Chapter 9 Elements of Group 13, 14 and 15
Exercises | Q 14 | Page 134
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