06. Application of Kp and Kc
Chemical Equilibrium

229241 $K_{c}$ for the reaction $\mathrm{N}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g}) \rightleftharpoons \quad 2 \mathrm{NO}(\mathrm{g})$
at $300 \mathrm{~K}$ is $4 \times 10^{-6}$. $\mathrm{K}_{\mathrm{p}}$ for the above reaction
$\text { will be }\left(R=2 \mathrm{cal} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\right)$

1 $2.4 \times 10^{-3}$
2 $4 \times 10^{-6}$
3 $4 \times 10^{-6}(\mathrm{RT})^{2}$
4 $16 \times 10^{-12}$
Chemical Equilibrium

229242 A sample of $\mathrm{HI}(\mathrm{g})$ is placed in a flask at a pressure of $0.2 \mathrm{~atm}$. At equilibrium, partial pressure of $\mathrm{HI}(\mathrm{g})$ is $0.04 \mathrm{~atm}$. What is $K_{p}$ for the given equilibrium?
2HI $(\mathrm{g}) \rightleftharpoons \mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g})$

1 0.04
2 0.4
3 40
4 4
Chemical Equilibrium

229243 What will be the expression of $K_{p}$ for the given reaction if the total pressure inside the vessel is $P$ and degree of dissociation of the reactant is a ? The reaction : $\mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}_{2}(\mathrm{~g})$

1 $4 \mathrm{a}^{2} \mathrm{P} /\left(1+\mathrm{a}^{2}\right)$
2 $4 \mathrm{a}^{2} \mathrm{P} /\left(1-\mathrm{a}^{2}\right)$
3 $\mathrm{a}^{2} \mathrm{P} /\left(1-\mathrm{a}^{2}\right)$
4 $\mathrm{a}^{2} /(1-\mathrm{a})$
Chemical Equilibrium

229245 The relationship between $K_{p}$ and $K_{c}$ is $K_{p}=K_{c}$ $(R T)^{\Delta n}$. What would be the value of $\Delta n$ for the reaction
$\mathrm{NH}_{4} \mathrm{Cl}(\mathrm{s}) \rightleftharpoons \mathrm{NH}_{3}(\mathrm{~g})+\mathrm{HCl}(\mathrm{g})$ ?

1 1
2 0.5
3 1.5
4 2
Chemical Equilibrium

229241 $K_{c}$ for the reaction $\mathrm{N}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g}) \rightleftharpoons \quad 2 \mathrm{NO}(\mathrm{g})$
at $300 \mathrm{~K}$ is $4 \times 10^{-6}$. $\mathrm{K}_{\mathrm{p}}$ for the above reaction
$\text { will be }\left(R=2 \mathrm{cal} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\right)$

1 $2.4 \times 10^{-3}$
2 $4 \times 10^{-6}$
3 $4 \times 10^{-6}(\mathrm{RT})^{2}$
4 $16 \times 10^{-12}$
Chemical Equilibrium

229242 A sample of $\mathrm{HI}(\mathrm{g})$ is placed in a flask at a pressure of $0.2 \mathrm{~atm}$. At equilibrium, partial pressure of $\mathrm{HI}(\mathrm{g})$ is $0.04 \mathrm{~atm}$. What is $K_{p}$ for the given equilibrium?
2HI $(\mathrm{g}) \rightleftharpoons \mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g})$

1 0.04
2 0.4
3 40
4 4
Chemical Equilibrium

229243 What will be the expression of $K_{p}$ for the given reaction if the total pressure inside the vessel is $P$ and degree of dissociation of the reactant is a ? The reaction : $\mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}_{2}(\mathrm{~g})$

1 $4 \mathrm{a}^{2} \mathrm{P} /\left(1+\mathrm{a}^{2}\right)$
2 $4 \mathrm{a}^{2} \mathrm{P} /\left(1-\mathrm{a}^{2}\right)$
3 $\mathrm{a}^{2} \mathrm{P} /\left(1-\mathrm{a}^{2}\right)$
4 $\mathrm{a}^{2} /(1-\mathrm{a})$
Chemical Equilibrium

229245 The relationship between $K_{p}$ and $K_{c}$ is $K_{p}=K_{c}$ $(R T)^{\Delta n}$. What would be the value of $\Delta n$ for the reaction
$\mathrm{NH}_{4} \mathrm{Cl}(\mathrm{s}) \rightleftharpoons \mathrm{NH}_{3}(\mathrm{~g})+\mathrm{HCl}(\mathrm{g})$ ?

1 1
2 0.5
3 1.5
4 2
Chemical Equilibrium

229241 $K_{c}$ for the reaction $\mathrm{N}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g}) \rightleftharpoons \quad 2 \mathrm{NO}(\mathrm{g})$
at $300 \mathrm{~K}$ is $4 \times 10^{-6}$. $\mathrm{K}_{\mathrm{p}}$ for the above reaction
$\text { will be }\left(R=2 \mathrm{cal} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\right)$

1 $2.4 \times 10^{-3}$
2 $4 \times 10^{-6}$
3 $4 \times 10^{-6}(\mathrm{RT})^{2}$
4 $16 \times 10^{-12}$
Chemical Equilibrium

229242 A sample of $\mathrm{HI}(\mathrm{g})$ is placed in a flask at a pressure of $0.2 \mathrm{~atm}$. At equilibrium, partial pressure of $\mathrm{HI}(\mathrm{g})$ is $0.04 \mathrm{~atm}$. What is $K_{p}$ for the given equilibrium?
2HI $(\mathrm{g}) \rightleftharpoons \mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g})$

1 0.04
2 0.4
3 40
4 4
Chemical Equilibrium

229243 What will be the expression of $K_{p}$ for the given reaction if the total pressure inside the vessel is $P$ and degree of dissociation of the reactant is a ? The reaction : $\mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}_{2}(\mathrm{~g})$

1 $4 \mathrm{a}^{2} \mathrm{P} /\left(1+\mathrm{a}^{2}\right)$
2 $4 \mathrm{a}^{2} \mathrm{P} /\left(1-\mathrm{a}^{2}\right)$
3 $\mathrm{a}^{2} \mathrm{P} /\left(1-\mathrm{a}^{2}\right)$
4 $\mathrm{a}^{2} /(1-\mathrm{a})$
Chemical Equilibrium

229245 The relationship between $K_{p}$ and $K_{c}$ is $K_{p}=K_{c}$ $(R T)^{\Delta n}$. What would be the value of $\Delta n$ for the reaction
$\mathrm{NH}_{4} \mathrm{Cl}(\mathrm{s}) \rightleftharpoons \mathrm{NH}_{3}(\mathrm{~g})+\mathrm{HCl}(\mathrm{g})$ ?

1 1
2 0.5
3 1.5
4 2
Chemical Equilibrium

229241 $K_{c}$ for the reaction $\mathrm{N}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g}) \rightleftharpoons \quad 2 \mathrm{NO}(\mathrm{g})$
at $300 \mathrm{~K}$ is $4 \times 10^{-6}$. $\mathrm{K}_{\mathrm{p}}$ for the above reaction
$\text { will be }\left(R=2 \mathrm{cal} \mathrm{mol}^{-1} \mathrm{~K}^{-1}\right)$

1 $2.4 \times 10^{-3}$
2 $4 \times 10^{-6}$
3 $4 \times 10^{-6}(\mathrm{RT})^{2}$
4 $16 \times 10^{-12}$
Chemical Equilibrium

229242 A sample of $\mathrm{HI}(\mathrm{g})$ is placed in a flask at a pressure of $0.2 \mathrm{~atm}$. At equilibrium, partial pressure of $\mathrm{HI}(\mathrm{g})$ is $0.04 \mathrm{~atm}$. What is $K_{p}$ for the given equilibrium?
2HI $(\mathrm{g}) \rightleftharpoons \mathrm{H}_{2}(\mathrm{~g})+\mathrm{I}_{2}(\mathrm{~g})$

1 0.04
2 0.4
3 40
4 4
Chemical Equilibrium

229243 What will be the expression of $K_{p}$ for the given reaction if the total pressure inside the vessel is $P$ and degree of dissociation of the reactant is a ? The reaction : $\mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{NO}_{2}(\mathrm{~g})$

1 $4 \mathrm{a}^{2} \mathrm{P} /\left(1+\mathrm{a}^{2}\right)$
2 $4 \mathrm{a}^{2} \mathrm{P} /\left(1-\mathrm{a}^{2}\right)$
3 $\mathrm{a}^{2} \mathrm{P} /\left(1-\mathrm{a}^{2}\right)$
4 $\mathrm{a}^{2} /(1-\mathrm{a})$
Chemical Equilibrium

229245 The relationship between $K_{p}$ and $K_{c}$ is $K_{p}=K_{c}$ $(R T)^{\Delta n}$. What would be the value of $\Delta n$ for the reaction
$\mathrm{NH}_{4} \mathrm{Cl}(\mathrm{s}) \rightleftharpoons \mathrm{NH}_{3}(\mathrm{~g})+\mathrm{HCl}(\mathrm{g})$ ?

1 1
2 0.5
3 1.5
4 2
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