05. Le-Chatelier Principle and It's Application
Chemical Equilibrium

229181 To an equilibrium mixture of
$2 \mathrm{SO}_{2(\mathrm{~g})}+\mathrm{O}_{2(\mathrm{~g})} \rightleftharpoons 2 \mathrm{SO}_{3(\mathrm{~g})}$
Some helium, an inert gas, is added at constant volume. The additiona of helium causes the total pressure to double. Which of the following is true?

1 The concentration of all three gases is unchanged.
2 The concentration of sulphur trioxide increases.
3 The numberof moles of sulphur trioxide increases.
4 The concentration of sulphur dioxide increases.
Chemical Equilibrium

229184 For the equilibrium,
$2 \mathrm{NO}_{2}(\mathrm{~g}) \rightleftharpoons \quad \mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g})+14.6 \mathrm{kcal}$,
Increase in temperature

1 favours the formation of $\mathrm{N}_{2} \mathrm{O}_{4}$
2 favours the decomposition of $\mathrm{N}_{2} \mathrm{O}_{4}$
3 does not affect equilibrium of $\mathrm{N}_{2} \mathrm{O}_{4}$
4 stop the reaction
Chemical Equilibrium

229185 According to Le-equilibrium's Principle, the addition of temperature to the following reaction: $\mathrm{CO}_{2}(\mathrm{~g})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \rightarrow \mathrm{CH}_{4}(\mathrm{~g})+2 \mathrm{O}_{2}$ (g) will cause it to the right. This reaction is therefore,

1 Exothermic
2 Unimolecular
3 Endothermic
4 Spontaneous
Chemical Equilibrium

229188 The basic principle of Cottnell' $s$ precipitation is

1 Le-Chatelier's principle
2 Peptisation
3 Neutralization of charge on colloidal particles
4 Scattering of light
Chemical Equilibrium

229189 For a system in equilibrium, $\Delta G=0$ under conditions of constant

1 temperature and pressure
2 temperature and pressure
3 energy and volume
4 pressure and volume
Chemical Equilibrium

229181 To an equilibrium mixture of
$2 \mathrm{SO}_{2(\mathrm{~g})}+\mathrm{O}_{2(\mathrm{~g})} \rightleftharpoons 2 \mathrm{SO}_{3(\mathrm{~g})}$
Some helium, an inert gas, is added at constant volume. The additiona of helium causes the total pressure to double. Which of the following is true?

1 The concentration of all three gases is unchanged.
2 The concentration of sulphur trioxide increases.
3 The numberof moles of sulphur trioxide increases.
4 The concentration of sulphur dioxide increases.
Chemical Equilibrium

229184 For the equilibrium,
$2 \mathrm{NO}_{2}(\mathrm{~g}) \rightleftharpoons \quad \mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g})+14.6 \mathrm{kcal}$,
Increase in temperature

1 favours the formation of $\mathrm{N}_{2} \mathrm{O}_{4}$
2 favours the decomposition of $\mathrm{N}_{2} \mathrm{O}_{4}$
3 does not affect equilibrium of $\mathrm{N}_{2} \mathrm{O}_{4}$
4 stop the reaction
Chemical Equilibrium

229185 According to Le-equilibrium's Principle, the addition of temperature to the following reaction: $\mathrm{CO}_{2}(\mathrm{~g})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \rightarrow \mathrm{CH}_{4}(\mathrm{~g})+2 \mathrm{O}_{2}$ (g) will cause it to the right. This reaction is therefore,

1 Exothermic
2 Unimolecular
3 Endothermic
4 Spontaneous
Chemical Equilibrium

229188 The basic principle of Cottnell' $s$ precipitation is

1 Le-Chatelier's principle
2 Peptisation
3 Neutralization of charge on colloidal particles
4 Scattering of light
Chemical Equilibrium

229189 For a system in equilibrium, $\Delta G=0$ under conditions of constant

1 temperature and pressure
2 temperature and pressure
3 energy and volume
4 pressure and volume
Chemical Equilibrium

229181 To an equilibrium mixture of
$2 \mathrm{SO}_{2(\mathrm{~g})}+\mathrm{O}_{2(\mathrm{~g})} \rightleftharpoons 2 \mathrm{SO}_{3(\mathrm{~g})}$
Some helium, an inert gas, is added at constant volume. The additiona of helium causes the total pressure to double. Which of the following is true?

1 The concentration of all three gases is unchanged.
2 The concentration of sulphur trioxide increases.
3 The numberof moles of sulphur trioxide increases.
4 The concentration of sulphur dioxide increases.
Chemical Equilibrium

229184 For the equilibrium,
$2 \mathrm{NO}_{2}(\mathrm{~g}) \rightleftharpoons \quad \mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g})+14.6 \mathrm{kcal}$,
Increase in temperature

1 favours the formation of $\mathrm{N}_{2} \mathrm{O}_{4}$
2 favours the decomposition of $\mathrm{N}_{2} \mathrm{O}_{4}$
3 does not affect equilibrium of $\mathrm{N}_{2} \mathrm{O}_{4}$
4 stop the reaction
Chemical Equilibrium

229185 According to Le-equilibrium's Principle, the addition of temperature to the following reaction: $\mathrm{CO}_{2}(\mathrm{~g})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \rightarrow \mathrm{CH}_{4}(\mathrm{~g})+2 \mathrm{O}_{2}$ (g) will cause it to the right. This reaction is therefore,

1 Exothermic
2 Unimolecular
3 Endothermic
4 Spontaneous
Chemical Equilibrium

229188 The basic principle of Cottnell' $s$ precipitation is

1 Le-Chatelier's principle
2 Peptisation
3 Neutralization of charge on colloidal particles
4 Scattering of light
Chemical Equilibrium

229189 For a system in equilibrium, $\Delta G=0$ under conditions of constant

1 temperature and pressure
2 temperature and pressure
3 energy and volume
4 pressure and volume
Chemical Equilibrium

229181 To an equilibrium mixture of
$2 \mathrm{SO}_{2(\mathrm{~g})}+\mathrm{O}_{2(\mathrm{~g})} \rightleftharpoons 2 \mathrm{SO}_{3(\mathrm{~g})}$
Some helium, an inert gas, is added at constant volume. The additiona of helium causes the total pressure to double. Which of the following is true?

1 The concentration of all three gases is unchanged.
2 The concentration of sulphur trioxide increases.
3 The numberof moles of sulphur trioxide increases.
4 The concentration of sulphur dioxide increases.
Chemical Equilibrium

229184 For the equilibrium,
$2 \mathrm{NO}_{2}(\mathrm{~g}) \rightleftharpoons \quad \mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g})+14.6 \mathrm{kcal}$,
Increase in temperature

1 favours the formation of $\mathrm{N}_{2} \mathrm{O}_{4}$
2 favours the decomposition of $\mathrm{N}_{2} \mathrm{O}_{4}$
3 does not affect equilibrium of $\mathrm{N}_{2} \mathrm{O}_{4}$
4 stop the reaction
Chemical Equilibrium

229185 According to Le-equilibrium's Principle, the addition of temperature to the following reaction: $\mathrm{CO}_{2}(\mathrm{~g})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \rightarrow \mathrm{CH}_{4}(\mathrm{~g})+2 \mathrm{O}_{2}$ (g) will cause it to the right. This reaction is therefore,

1 Exothermic
2 Unimolecular
3 Endothermic
4 Spontaneous
Chemical Equilibrium

229188 The basic principle of Cottnell' $s$ precipitation is

1 Le-Chatelier's principle
2 Peptisation
3 Neutralization of charge on colloidal particles
4 Scattering of light
Chemical Equilibrium

229189 For a system in equilibrium, $\Delta G=0$ under conditions of constant

1 temperature and pressure
2 temperature and pressure
3 energy and volume
4 pressure and volume
Chemical Equilibrium

229181 To an equilibrium mixture of
$2 \mathrm{SO}_{2(\mathrm{~g})}+\mathrm{O}_{2(\mathrm{~g})} \rightleftharpoons 2 \mathrm{SO}_{3(\mathrm{~g})}$
Some helium, an inert gas, is added at constant volume. The additiona of helium causes the total pressure to double. Which of the following is true?

1 The concentration of all three gases is unchanged.
2 The concentration of sulphur trioxide increases.
3 The numberof moles of sulphur trioxide increases.
4 The concentration of sulphur dioxide increases.
Chemical Equilibrium

229184 For the equilibrium,
$2 \mathrm{NO}_{2}(\mathrm{~g}) \rightleftharpoons \quad \mathrm{N}_{2} \mathrm{O}_{4}(\mathrm{~g})+14.6 \mathrm{kcal}$,
Increase in temperature

1 favours the formation of $\mathrm{N}_{2} \mathrm{O}_{4}$
2 favours the decomposition of $\mathrm{N}_{2} \mathrm{O}_{4}$
3 does not affect equilibrium of $\mathrm{N}_{2} \mathrm{O}_{4}$
4 stop the reaction
Chemical Equilibrium

229185 According to Le-equilibrium's Principle, the addition of temperature to the following reaction: $\mathrm{CO}_{2}(\mathrm{~g})+2 \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \rightarrow \mathrm{CH}_{4}(\mathrm{~g})+2 \mathrm{O}_{2}$ (g) will cause it to the right. This reaction is therefore,

1 Exothermic
2 Unimolecular
3 Endothermic
4 Spontaneous
Chemical Equilibrium

229188 The basic principle of Cottnell' $s$ precipitation is

1 Le-Chatelier's principle
2 Peptisation
3 Neutralization of charge on colloidal particles
4 Scattering of light
Chemical Equilibrium

229189 For a system in equilibrium, $\Delta G=0$ under conditions of constant

1 temperature and pressure
2 temperature and pressure
3 energy and volume
4 pressure and volume