Stability of coordination compounds

Explain, how the nature of ligand affects the stability of coordination complex.

Define overall stability constant of a complex.

Consider the following equilibrium

 $\text{AgCl}\downarrow +{\text{2NH}}_3\rightleftharpoons {\left[\text{Ag}{\left({\text{NH}}_3\right)}_2\right]}^{+}+{\text{Cl}}^{-}$

White precipitate of AgCl appears on adding which of the following ?

Consider the following equilibrium

 $\text{AgCl}\downarrow +{\text{2NH}}_3\rightleftharpoons {\left[\text{Ag}{\left({\text{NH}}_3\right)}_2\right]}^{+}+{\text{Cl}}^{-}$

White precipitate of AgCl appears on adding which of the following ?

Explain the factors affecting the stability of coordination compounds. 

Which one is more stable in the following pair of complexes? Give reasons.

$\left[\mathrm{Co}\right({\mathrm{H}}_2\mathrm{O}{)}_6{]}^{2+}$ and$\left[\mathrm{Co}\right({\mathrm{NH}}_3{)}_6{]}^{2+}$
 

Which one is more stable in the following pair of complex? Give reasons.

${\mathrm{K}}_4\left[\mathrm{Fe}\right(\mathrm{CN}{)}_6]$ and ${\mathrm{K}}_3\left[\mathrm{Fe}\right(\mathrm{CN}{)}_6]$

Which one is more stable in the following pair of complex? Give reasons.
$\left[\mathrm{Co}\right({\mathrm{NO}}_2{)}_6{]}^{4-}$ and $\left[\mathrm{Co}\right({\mathrm{NO}}_2{)}_6{]}^{3-}$
 

Compare R.E.B.(Rotational Energy Barrier) for the given molecules:

$\mathrm{i}.$ $\mathrm{M}\mathrm{e}-\mathrm{C}\mathrm{H}=\mathrm{C}\mathrm{H}-\mathrm{M}\mathrm{e}$

$\mathrm{i}\mathrm{i}.$ $\mathrm{M}\mathrm{e}-\mathrm{C}\mathrm{H}=\mathrm{C}\mathrm{H}-\mathrm{O}-\mathrm{M}\mathrm{e}$

$\mathrm{i}\mathrm{i}\mathrm{i}.$ ${\mathrm{O}}_2\mathrm{ }\mathrm{N}-\mathrm{C}\mathrm{H}=\mathrm{C}\mathrm{H}-\mathrm{O}\mathrm{M}\mathrm{e}$

$\mathrm{i}\mathrm{v}.$ $\mathrm{M}\mathrm{e}-\mathrm{C}{\mathrm{H}}_2-\mathrm{C}{\mathrm{H}}_2-\mathrm{M}\mathrm{e}$

Ammonia forms the complex ion ${\left[\mathrm{C}\mathrm{u}{\left(\mathrm{N}{\mathrm{H}}_3\right)}_4\right]}^{2+}$with copper ions in alkaline solution but not in acidic solution. What is the reason for it?

What is the ratio of uncomplexed to complexed ${\mathrm{Zn}}^{2+}$ ion in a solution that is $10 \mathrm{M}$ in ${\mathrm{NH}}_3$, if the stability constant of ${\left[\mathrm{Zn}{\left({\mathrm{NH}}_3\right)}_4\right]}^{2+}$ is $3\times {10}^9$?

The most stable ion is

The most stable ion is

The most stable ion is