Lechat

Le Chatelier's principle is used to predict the effect of a change in conditions on a chemical equilibrium. Which of the following changes will shift the equilibrium of the reaction @@N_2(g) + 3H_2(g) ightleftharpoons 2NH_3(g)@@ to the right?

• Decreasing the pressure

• Increasing the temperature

• Adding a catalyst

Tags

NGSS.HS-PS1-5

According to Le Chatelier's principle, what happens to the equilibrium position of the exothermic reaction @@2SO_2(g) + O_2(g) ightleftharpoons 2SO_3(g)@@ when the temperature is increased?

• Shifts to the right

• Shifts to the left

• Remains unchanged

• Cannot be determined

Tags

NGSS.HS-PS1-5

In the context of Le Chatelier's principle, which of the following is true for a system at equilibrium when the pressure is increased?

• The equilibrium will shift towards the side with more moles of gas

• The equilibrium will shift towards the side with fewer moles of gas

• The equilibrium will not shift

• The equilibrium constant will change

Le Chatelier's principle can be applied to which of the following types of reactions?

• Only exothermic reactions

• Only endothermic reactions

• Both exothermic and endothermic reactions

• Neither exothermic nor endothermic reactions

Tags

NGSS.HS-PS1-5

Which of the following statements is true according to Le Chatelier's principle?

• Adding a reactant will shift the equilibrium to the left

• Removing a product will shift the equilibrium to the right

• Increasing the temperature of an exothermic reaction shifts the equilibrium to the right

• Decreasing the pressure of a gaseous reaction shifts the equilibrium to the side with more moles

In a chemical equilibrium involving gases, what effect does decreasing the volume of the container have according to Le Chatelier's principle?

• Shifts the equilibrium towards the side with more moles of gas

• Shifts the equilibrium towards the side with fewer moles of gas

• No effect on the equilibrium

• Increases the equilibrium constant

Le Chatelier's principle is often used in industrial processes. Which of the following is an example of its application?

• Increasing the yield of ammonia in the Haber process by increasing pressure

• Decreasing the yield of sulfuric acid by lowering temperature

• Increasing the production of ethanol by adding more water

• Decreasing the production of methanol by removing carbon monoxide

Tags

NGSS.HS-PS1-6

Which of the following changes will not affect the position of equilibrium according to Le Chatelier's principle?

• Changing the concentration of reactants

• Changing the concentration of products

• Adding a catalyst

• Changing the temperature

• Shifts to the right

• Shifts to the left

• No change

• Equilibrium constant changes

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

For the endothermic reaction @@CaCO_3(s) ightleftharpoons CaO(s) + CO_2(g)@@, what is the effect of increasing temperature on the equilibrium position?

• Shifts to the right

• Shifts to the left

• No change

• Equilibrium constant decreases

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6