# The equivalents of ethylene diamine required to replace the neutral ligands from

Question:

The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of $\mathrm{CoCl}_{3} \cdot 4 \mathrm{NH}_{3}$ is ___________ .

(Round off to the Nearest Integer).

Solution:

(2)

trans $-\mathrm{CoCl}_{3} \cdot 4 \mathrm{NH}_{3}$

Or

$\because$ trans $-\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{4} \mathrm{Cl}_{2}\right] \mathrm{C} \ell$

As we know that ethylene diamine is a bidentate ligand and ammonia is a mono dentate ligand. It means overall two ethylene diamine is required to replace the all neutral ligands (four ammonia) from the coordination sphere of this complex.