Equilibrium and Temperature Effects

This video tutorial explains the effect of temperature changes on reversible reactions at equilibrium, focusing on higher-tier students. It recaps Le Chatelier's Principle and discusses how increasing or decreasing temperature affects the direction of equilibrium shifts. The video uses the reaction between NO2 and N2O4 as an example, explaining the concepts of exothermic and endothermic reactions. It concludes with a reminder to practice with questions available in the workbook.

What principle is used to predict the effect of a change in conditions on a system at equilibrium?

• Newton's Third Law

• Avogadro's Law

• Boyle's Law

• Le Chatelier's Principle

In a reversible reaction, if the forward reaction is exothermic, what is the nature of the reverse reaction?

• Neutral

• Endothermic

• Exothermic

• Catalytic

What is the nature of the forward reaction in the NO2 to N2O4 reaction?

• Endothermic

• Exothermic

• Neutral

• Catalytic

What happens to the equilibrium position when the temperature of an exothermic reaction is increased?

• Shifts to the left

• Shifts to the right

• Remains unchanged

• Becomes unstable

When the temperature is increased in a reversible reaction, what happens to the concentration of the reactants if the reverse reaction is endothermic?

• Increases

• Doubles

• Remains the same

• Decreases

If the temperature of a system is decreased, in which direction does the equilibrium shift for an exothermic forward reaction?

• To the left

• To the right

• Remains unchanged

• Becomes unstable

What effect does decreasing the temperature have on the concentration of products in an exothermic forward reaction?

• Increases

• Decreases

• Doubles

• Remains the same

What is the main focus of the video tutorial?

• Effect of catalysts on reactions

• Effect of temperature on reversible reactions

• Effect of pressure on reactions

• Effect of volume on reactions

What is the effect of temperature on the equilibrium of a reversible reaction?

• It causes the equilibrium to shift to counteract the temperature change

• It always shifts the equilibrium to the left

• It always shifts the equilibrium to the right

• It has no effect

What additional resource is mentioned for further practice on the topic?

• Online quiz

• Vision workbook

• Textbook exercises

• Lab experiments