Heterogeneous Equilibria

How is the attainment of equilibrium recognised in case of following equilibria?

Dissociation of ${\mathrm{N}}_2{\mathrm{O}}_5$ in a closed vessel.

How is the attainment of equilibrium recognised in case of following equilibria?

Dissociation of magnesium carbonate in a closed vessel.

Why pure solids and liquids are ignored while writing the equilibrium constant expression?

Which one of the following is NOT an example of heterogeneous equilibrium?

Write the expression for the equilibrium constant ${\mathrm{K}}_{\mathrm{c}}$ for the following reaction:

${\mathrm{CO}}_2\left(\mathrm{g}\right)+\mathrm{C}\left(\mathrm{s}\right)\stackrel{ }{\rightleftharpoons }2\mathrm{CO}\left(\mathrm{g}\right)$

Write the expression for the equilibrium constant, ${\mathrm{K}}_{\mathrm{c}}$ for the following reaction, ${\mathrm{Br}}_2\left(\mathrm{l}\right) \rightleftharpoons {\mathrm{Br}}_2\left(\mathrm{g}\right)$.

Write the expression for the equilibrium constant ${\mathrm{K}}_{\mathrm{c}}$ for the following reaction:

${\mathrm{PCl}}_3\left(\mathrm{l}\right)+{\mathrm{Cl}}_2\left(\mathrm{g}\right)\stackrel{ }{\rightleftharpoons }{\mathrm{PCl}}_5\left(\mathrm{s}\right)$

Explain heterogeneous equilibrium with the help of an example.

Write the expression for the equilibrium constant ${\mathrm{K}}_{\mathrm{c}}$ for the following reaction:

${{\mathrm{CrO}}_4}^{2-}\left(\mathrm{aq}\right)+{\mathrm{Pb}}^{2+}\left(\mathrm{aq}\right)\stackrel{ }{\rightleftharpoons }{\mathrm{PbCrO}}_4\left(\mathrm{s}\right)$

What is a heterogeneous equilibrium?

Explain why pure solids and liquids can be ignored while writing the equilibrium constant expression ?

The thermal dissociation equilibrium of $\mathrm{C}\mathrm{a}\mathrm{C}{\mathrm{O}}_3$(s) is studied under different conditions.
$\mathrm{C}\mathrm{a}\mathrm{C}{\mathrm{O}}_3\left(\mathrm{s}\right)\rightleftharpoons \mathrm{C}\mathrm{a}\mathrm{O}\left(\mathrm{s}\right)+\mathrm{C}{\mathrm{O}}_2\left(\mathrm{g}\right)$
For this equilibrium, the incorrect statement is:

The partial pressure of carbon dioxide from the following is :

$\mathrm{C}\mathrm{a}\mathrm{C}{{\mathrm{O}}_3}_{\left(\mathrm{s}\right)}\mathrm{ }\rightleftharpoons \mathrm{ }\mathrm{C}\mathrm{a}{\mathrm{O}}_{\left(\mathrm{s}\right)\mathrm{ }}+\mathrm{ }\mathrm{C}{{\mathrm{O}}_2}_{\left(\mathrm{g}\right)}\mathrm{ };\mathrm{ }{\mathrm{K}}_{\mathrm{p}}=8\mathrm{ }\times \mathrm{ }{10}^{–2}$

Partial pressure of ${\mathrm{O}}_2$ in the reaction

$2\mathrm{A}{\mathrm{g}}_2\mathrm{O}\left(s\right)\rightleftharpoons 4\mathrm{A}\mathrm{g}\left(s\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)$ is

Hot copper turnings can be used as oxygen getter for inert gas supplies by slowly passing the gas over the turnings at 600 K.

$2{\text{Cu}}_{\left(\text{s}\right)}+\frac{1}{2}{\text{O}}_{2\left(\text{g}\right)}\rightleftharpoons {\text{Cu}}_2{\text{O}}_{\left(\text{s}\right)};K_{\text{P}}=\text{7.5}\times 10^{10}{\text{atm}}^{-1/2}$

The number of molecules of O₂ per litre left after equilibrium has reached are :

The dissociation equilibrium pressure of ${\mathrm{NH}}_4\mathrm{HS}\left(\mathrm{s}\right)$ is $60 \mathrm{cm}$ of $\mathrm{Hg}$ at $27°\mathrm{C}$. The total pressure at equilibrium when ${\mathrm{NH}}_4\mathrm{HS}$ is dissociated in the presence of $45 \mathrm{cm}$ of $\mathrm{Hg}$ of ${\mathrm{NH}}_3$ is

K_p for the reaction
${\mathrm{CuSO}}_4·3{\mathrm{H}}_2{\mathrm{O}}_{\left(\mathrm{s}\right)}+2{\mathrm{H}}_2{\mathrm{O}}_{\left(\mathrm{g}\right)}\to {\mathrm{CuSO}}_4·5{\mathrm{H}}_2{\mathrm{O}}_{\left(\mathrm{s}\right)}$   is $1·0\times 10^4 {\text{atm}}^{-2}$  at certain  temperature. What lowest relative humidity of air can be achieved using $CuS{O}_4.3H_{2}O$ as drying agent at that temperature ?
Aqueous tension at the given temperature = 16 torr