Equilibrium Constants and Calculations

The video tutorial explains how to calculate equilibrium constants, Kc and Kp, using concentrations and partial pressures. It provides examples of reactions, including N2O4 converting to NO2 and CO2 reacting with H2 to form CO and H2O. The tutorial demonstrates the use of ICE tables for calculating Kp and emphasizes the importance of temperature in equilibrium constant calculations.

What is the equilibrium constant used to describe?

• The pressure of a reaction

• The temperature of a reaction

• The concentrations of reactants and products at equilibrium

• The rate of a reaction

In the reaction N2O4 to 2NO2, what is the expression for Kc?

• [N2O4]^2 / [NO2]

• [NO2] / [N2O4]^2

• [NO2]^2 / [N2O4]

• [N2O4] / [NO2]^2

Why is it important to specify the temperature when giving a value for an equilibrium constant?

• Because the equilibrium constant changes with pressure

• Because the equilibrium constant is only constant at a specific temperature

• Because the equilibrium constant is only constant at a specific concentration

• Because the equilibrium constant changes with volume

What does the 'p' in Kp stand for?

• Proportion

• Product

• Pressure

• Partial

In the ICE table method, what does 'I' stand for?

• Initial

• Intermediate

• Increment

• Inert

What is the change in partial pressure of H2O in the ICE table example?

• 0.20

• 0.30

• 0.10

• 0.40

How do you determine the change in partial pressures for reactants in the ICE table?

• By subtracting the change in products

• By adding the change in products

• By dividing the change in products

• By multiplying the change in products

What is the equilibrium partial pressure of carbon monoxide in the example?

• 0.30

• 0.40

• 0.20

• 0.10

What is the expression for Kp in terms of partial pressures?

• P(CO2) * P(H2) / (P(CO) * P(H2O))

• P(CO) / P(H2O)

• P(CO) * P(H2O) / (P(CO2) * P(H2))

• P(H2O) / P(CO)

What is the value of Kp at 500 Kelvin for the given reaction?

• 0.01

• 0.31

• 0.11

• 0.21