Le Chatelier's Principle and Equilibrium

Mr. Anderson explains Le Chatelier's Principle, which describes how reversible reactions respond to disturbances in equilibrium. He provides examples, such as the Haber process, to illustrate how changes in concentration, pressure, and temperature affect reaction direction and equilibrium. The video also covers strategies to increase yield in chemical reactions by manipulating these factors.

What does Le Chatelier's Principle primarily address in a chemical reaction?

• The formation of new compounds

• Disturbances to equilibrium

• The color change in the reaction

• The speed of the reaction

Which of the following is NOT a factor that can disturb equilibrium according to Le Chatelier's Principle?

• Change in pressure

• Change in temperature

• Change in color

• Change in concentration

In the Haber process, what happens when there is an increase in hydrogen concentration?

• The reaction shifts to the left

• The reaction shifts to the right

• The reaction stops

• The reaction becomes irreversible

How does a decrease in volume affect the equilibrium of a gas reaction?

• It has no effect on equilibrium

• It shifts the equilibrium to the side with fewer moles

• It decreases the pressure

• It increases the number of moles

What happens to the equilibrium when the pressure is increased in a reaction with more moles of gas on the left side?

• The equilibrium remains unchanged

• The equilibrium shifts to the right

• The equilibrium shifts to the left

• The reaction stops

What is the effect of increasing temperature on an endothermic reaction?

• The reaction shifts to the right

• The reaction shifts to the left

• The reaction becomes exothermic

• The reaction rate decreases

In an exothermic reaction, what is the effect of decreasing temperature?

• The reaction becomes endothermic

• The reaction rate decreases

• The reaction shifts to the right

• The reaction shifts to the left

What is the result of increasing the temperature in an exothermic reaction?

• The reaction becomes endothermic

• The reaction rate increases

• The reaction shifts to the left

• The reaction shifts to the right

In the context of Le Chatelier's Principle, what does a decrease in temperature do to an endothermic reaction?

• Decreases the reaction rate

• Increases the reaction rate

• Shifts the reaction to the left

• Shifts the reaction to the right

How can the yield of ammonia be increased in the Haber process?

• By increasing the concentration of reactants

• By decreasing the concentration of reactants

• By increasing the volume

• By increasing the temperature