Stability of Coordination Compounds

In the complexes  ${\left[\mathrm{Fe}{\left({\mathrm{H}}_{\mathrm{2}}\mathrm{O}\right)}_{\mathrm{6}}\right]}^{\mathrm{3}+},\mathrm{ }{\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_{\mathrm{6}}\right]}^{\mathrm{3}–},\mathrm{ }{\left[\mathrm{Fe}{\left({\mathrm{C}}_{\mathrm{2}}{\mathrm{O}}_{\mathrm{4}}\right)}_{\mathrm{3}}\right]}^{\mathrm{3}–}\mathrm{and} {\left[{\mathrm{FeCl}}_{\mathrm{6}}\right]}^{\mathrm{3}–},$  more stability is shown by

The overall complex dissociation equilibrium constant for ${\left[\mathrm{Cr}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$ ion is $5\times {10}^{-12}$. The overall stability constant of the complex is

${\mathrm{Ag}}^{+}+{\mathrm{NH}}_3\rightleftharpoons {\left[\mathrm{Ag}\left({\mathrm{NH}}_3\right)\right]}^{+}; {\mathrm{k}}_1=6·8\times {10}^{-3}$

${\left[\mathrm{Ag}\left({\mathrm{NH}}_3\right)\right]}^{+}+{\mathrm{NH}}_3\rightleftharpoons {\left[\mathrm{Ag}{\left({\mathrm{NH}}_3\right)}_2\right]}^{+}; {\mathrm{k}}_2=1.6\times {10}^{-3}$

then the formation constant of ${\left[\mathrm{Ag}{\left({\mathrm{NH}}_3\right)}_2\right]}^{+}$ is

The coordination complex that absorbs at higher wavelength is

The most stable complex among the following is

Equivalent conductance of $0.2 \mathrm{M}$ aqueous solution of a weak monobasic acid $\left(\mathrm{HA}\right)$ is $10 \mathrm{S} {\mathrm{cm}}^2 {\mathrm{equv}}^{-1}$ and that at infinite dilution is $200 \mathrm{S} {\mathrm{cm}}^2$ equv${}^{-1}$. Dissociation constant of weak acid is :-

Which of the following is correct order of stability?

On the basis of stability of complex ion in the solution, complexes may be of two types, perfect and imperfect complexes. The stability depends upon the extent of dissociation which in turn depends upon the strength of metal-ligand bond. The stability of complex also depends upon charge on central metal  atom, basic nature of ligand, chelation, and nature of metal ion and ligand according to $\mathrm{HSAB}$ principle.

Which complex is most stable ?

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 ?

Which among the following is incorrect statement regarding $\mathrm{A}={\left[\mathrm{Co}(\mathrm{en}{)}_2{\mathrm{Cl}}_2\right]}^{+}$ and $\mathrm{B}={\left[\mathrm{Co}{\left({\mathrm{NH}}_3\right)}_4{\mathrm{Cl}}_2\right]}^{+}$?

Which set of ions gives complexes which are not kinetically labile?

$$\begin{gathered} \mathrm{M}+\mathrm{L}\rightleftharpoons \mathrm{ML} {\mathrm{K}}_{\mathrm{f}}=4 \\ \mathrm{ML}+\mathrm{L}\rightleftharpoons {\mathrm{ML}}_2 {\mathrm{K}}_{\mathrm{f}}=3 \end{gathered}$$

What will be the ${\mathrm{K}}_{\mathrm{f}}$ value for $\mathrm{M}+2\mathrm{L}\rightleftharpoons {\mathrm{ML}}_2$?

Cotyledons are also called-

Which complex in the following has the highest stability constant at 298 K?

Point out incorrect stability order

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 overall formation equilibrium constant for the ion${\left[M{L}_4\right]}^{2-}$ ion, given that ${\mathrm{\beta }}_4$ for this complex is $2.5⨯{10}^{13}$?

The most stable ion is