Factors Affecting Equilibrium

IMPORTANT

Factors Affecting Equilibrium: Overview

This Topic covers sub-topics such as Le Chatelier's Principle, Factors Affecting Equilibrium, Effect of Temperature on Equilibrium, Effect of Inert Gas on Equilibrium, Effect of Catalyst on Equilibrium and, Applications of Le Chatelier's Principle

Important Questions on Factors Affecting Equilibrium

EASY
IMPORTANT

Consider the following equilibrium in a closed container

  N 2 O 4 ( g )2N O 2 ( g )

At a fixed temperature, the volume of the reaction container is halved. For this change, which of the following statements holds true regarding the equilibrium constant   K p and degree of dissociation ( α ) ?

EASY
IMPORTANT

When two reactants, A and B are mixed to give products C and D, the reaction quotient Q, at the initial stage of the reaction :–

EASY
IMPORTANT

For the chemical reaction  3X(g)+Y(g)X3Y(g) , the amount of   X 3 Y at equilibrium is affected by –

MEDIUM
IMPORTANT

Standard Gibbs free energy change for isomerisation reaction: cis2  pentenetrans2pentene

is 3.67 kJ/mol at 400K.  If more trans-2 pentene is added to the reaction vessel, then:

                               

EASY
IMPORTANT

Consider the following equilibrium in a closed container

  N 2 O 4 ( g )2N O 2 ( g )

At a fixed temperature, the volume of the reaction container is halved. For this change, which of the following statements holds true regarding the equilibrium constant   K p and degree of dissociation ( α ) ?

EASY
IMPORTANT

When two reactants A and B are mixed to give products C and D, the reaction quotient Q at the initial stage of the reaction is best described by-

MEDIUM
IMPORTANT

In which of the following equilibrium, change in the volume of the system does not alter the number of moles –

EASY
IMPORTANT

For the reaction, 2A(g)+B(g)2C(g), ΔH=+13.6 kJ, which of the following will increase the extent of the reaction at equilibrium?

MEDIUM
IMPORTANT

The thermal dissociation equilibrium reaction of CaCO3(s) is studied under different conditions
CaCO3(s)CaO(s)+CO2(g)

For this equilibrium reaction, the correct statement(s) is/ (are):

MEDIUM
IMPORTANT

At the equilibrium of the reaction, 2 X (g) + Y (g)X2Y (g), the number of moles of X2Y at equilibrium is affected by the

MEDIUM
IMPORTANT

0.6 mole of PCl5, 0.3 mole of PCl3 and 0.5 mole of Cl2 are taken in a 1L flask to obtain the following equilibrium:
PCl5(g)PCl3(g)+Cl2(g)
If the equilibrium constant Kc for the reaction is 0.2. Predict the direction of the reaction.

EASY
IMPORTANT

Which of the following reactions will not get affected on increasing the pressure?

EASY
IMPORTANT

Consider the following reaction CaCO3( s)CaO(s)+CO2(g) in closed container at equilibrium. What would be the effect of addition of CaCO3 on the equilibrium concentration of CO2?

EASY
IMPORTANT

For the following reversible reaction,

N2g+3H2g2NH3g; ΔHf=-92 kJ/mol.

MEDIUM
IMPORTANT

At the equilibrium of the reaction, 2 X (g) + Y (g)X2Y (g), the number of moles of X2Y at equilibrium is affected by the

MEDIUM
IMPORTANT

What would happen to a reversible dissociation reaction at equilibrium when an inert gas is added while the pressure remains unchanged? Here n >0

HARD
IMPORTANT

The reaction N2 (g) + 3H2 (g)  2NH3 (g) is in equilibrium. Now the reaction mixture is compressed to half the volume

EASY
IMPORTANT

By adding inert gas at a constant volume, which of the following equilibrium will not be affected?

EASY
IMPORTANT

For the equilibrium: PCl5(g)PCl3(g)+Cl2(g) 

What will be the concentration of Cl2(g), if the equilibrium concentration of PCl5(g) is doubled?

MEDIUM
IMPORTANT

Which of the following statements is incorrect with respect to the given spontaneous reaction?