Equilibrium Concepts Quiz

As a reaction approaches equilibrium, what happens to the rate of the forward reaction?

• It increases to a constant nonzero rate.

• It decreases to zero.

• It remains constant.

• It decreases to a constant nonzero rate.

What is the initial step in setting up an ICE table for calculating KP?

• Find the equilibrium constant KC.

• Identify the initial pressures of all reactants and products.

• Calculate the change in pressure for each component.

• Determine the total pressure at equilibrium.

How do you solve for the unknown 'X' in the ICE table for the decomposition of PCl5?

• By using the total pressure at equilibrium.

• By using the initial pressure of PCl5.

• By using the equilibrium constant KP.

• By using the initial concentration of PCl3.

In the decomposition of CO2, what is the total pressure at equilibrium used for?

• To calculate the initial pressure of CO2.

• To find the value of KP.

• To calculate the equilibrium constant KC.

• To determine the change in pressure for each component.

What is the relationship between KC and KP for a reaction?

• KC is always greater than KP.

• KP is always greater than KC.

• KC and KP are equal when the reaction involves gases.

• KC and KP are related through the ideal gas constant and temperature.

How does reversing a reaction affect the equilibrium constant?

• It doubles the equilibrium constant.

• It halves the equilibrium constant.

• It inverts the equilibrium constant.

• It has no effect on the equilibrium constant.

Which factor does not affect the value of the equilibrium constant?

• Concentration

• Temperature

• Pressure

• Catalyst

What happens to the equilibrium position when the volume of the system is increased?

• It shifts towards the side with more reactants.

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

• It shifts towards the side with fewer moles of gas.

• It remains unchanged.

In an exothermic reaction, what is the effect of increasing temperature on the equilibrium constant?

• The equilibrium constant becomes zero.

• The equilibrium constant remains the same.

• The equilibrium constant decreases.

• The equilibrium constant increases.

Which system will not experience a shift in equilibrium when the volume changes?

• A system with equal moles of gas on both sides.

• A system with no gases involved.

• A system with more moles of gas on the reactant side.

• A system with more moles of gas on the product side.