Gaseous Equilibrium and Reaction Conditions

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 moles of gas is equal on both sides. For exothermic reactions, lowering temperature and increasing pressure shift equilibrium to the right. The tutorial also references Le Chatelier's principle for further understanding.

Which factor does not affect the equilibrium when the volume of a gaseous system is changed?

• The temperature is constant.

• The reaction involves solids.

• The reaction is exothermic.

• The number of moles of gas on each side is equal.

What happens to the equilibrium position if the volume of a gaseous system is increased?

• It remains unchanged.

• It shifts towards the side with fewer gas particles.

• It shifts towards the side with more solid particles.

• It shifts towards the side with more gas particles.

In the reaction 2 SO2 + O2 ⇌ 2 SO3, what is the effect of decreasing the volume?

• Equilibrium shifts towards the side with more moles of gas.

• Equilibrium remains unchanged.

• Equilibrium shifts to the right.

• Equilibrium shifts to the left.

What is the enthalpy change (ΔH) for the reaction 2 SO2 + O2 ⇌ 2 SO3?

• -100 kJ/mol

• 0 kJ/mol

• +198 kJ/mol

• -198 kJ/mol

Which condition favors the forward reaction in an exothermic equilibrium?

• Increasing temperature

• Decreasing temperature

• Decreasing pressure

• Increasing volume

How does increasing pressure affect the equilibrium of the reaction 2 SO2 + O2 ⇌ 2 SO3?

• Remains unchanged

• Shifts towards the side with more moles of gas

• Shifts to the left

• Shifts to the right

What role does heat play in an exothermic reaction?

• Heat is a product.

• Heat is an inhibitor.

• Heat has no role.

• Heat is a reactant.

Which of the following conditions will not shift the equilibrium of an exothermic reaction to the right?

• Increasing temperature

• Increasing pressure

• Decreasing temperature

• Decreasing volume

In the context of gaseous equilibria, what is the effect of reducing the temperature?

• Increases the rate of reaction

• No effect on equilibrium

• Shifts equilibrium to the side with less heat

• Shifts equilibrium to the side with more heat

What is the primary focus of the practice problems discussed in the video?

• Solid-liquid equilibria

• Thermal equilibria

• Aqueous equilibria

• Gaseous equilibria