IIT/JEE Chemistry Practice #35: Gaseous Equilibria

The video tutorial covers problems related to gaseous equilibria, focusing on how changes in volume affect equilibrium and the conditions that favor the forward reaction in an exothermic process. It explains that a change in volume impacts equilibrium unless the number of gas moles is equal on both sides. For exothermic reactions, lowering temperature and increasing pressure shift equilibrium to the right.

Which condition will not affect the equilibrium when the volume of the vessel is changed?

• When the number of moles of gas is equal on both sides

• When there are more moles of gas on the right

• When the reaction is exothermic

• When there are more moles of gas on the left

In the reaction 2SO2 + O2 → 2SO3, what is the effect of increasing the pressure?

• Shifts equilibrium to the left

• No effect on equilibrium

• Increases the rate of reaction

• Shifts equilibrium to the right

What is the role of heat in the given exothermic reaction?

• Heat is a product

• Heat is a reactant

• Heat is a catalyst

• Heat has no role

Which condition will shift the equilibrium to the right in an exothermic reaction?

• Decreasing pressure

• Adding more reactants

• Decreasing temperature

• Increasing temperature

What happens to the equilibrium when the temperature is lowered in an exothermic reaction?

• Reaction rate decreases

• Equilibrium remains unchanged

• Equilibrium shifts to the right

• Equilibrium shifts to the left