Reason For Learning
Some chemical reactions are reversible. A product, once formed , might break down to reform the original reactants. Therefore, it might be difficult to manufacture a desired chemical. Scientists want to br able to control the conditions of the reaction to obtain the maximum possible yield of product.
Learning Intention
After completing this learning bite you should be able to:
Describe the features of dynamic equilibrium. Describe how rates of forward and back reactions change as a reaction reaches equilibrium. Compare the rates of forward and back reactions at equilibrium. Write an expression for the equilibrium law for a homogeneous reaction. Explain the significance of the magnitude of the constant for a reaction. Perform calculations involving an equilibrium constant and concentration data. Predict the effect on an equilibrium constant if temperature is increased or decreased. Define and use Le Chatelier's principle to predict the direction in which the equilibrium position will shift in response to a change. Recall that when a catalyst is added to a reaction, the value of the equilibrium constant and the equilibrium position remain unchanged.
Key Vocabulary Terms