Which of the following can be predicted from the law of mass action?
I. At equilibrium, the ratio of concentrations of products to reactants, each raised to a power corresponding to the stoichiometric coefficient in the balanced reaction equation, will have a constant value at a given temperature.
II. The direction of the reaction given values for the reactant and product concentrations and the equilibrium constant.
III. The rate at which reactants will be turned into products.

Question

Quizplus · Accepted Answer

The Law of Mass Action states that the rate of a chemical reaction is directly proportional to the product of the concentrations of the reactants, each raised to a power equal to its stoichiometric coefficient in the balanced chemical equation. This leads to the following predictions: 
I. At equilibrium, the ratio of concentrations of products to reactants, each raised to a power corresponding to the stoichiometric coefficient in the balanced reaction equation, will have a constant value at a given temperature. This is a direct consequence of the Law of Mass Action and is the basis for the equilibrium constant expression. 
II. The direction of the reaction given values for the reactant and product concentrations and the equilibrium constant. This is because the equilibrium constant expression reflects the relative concentrations of reactants and products at equilibrium, and thus allows us to predict the direction in which the reaction will proceed under specific conditions. 
III. The rate at which reactants will be turned into products is not predicted by the Law of Mass Action alone, as this depends on factors such as temperature, catalysts, and reaction mechanisms. Therefore, statement III is not correct.

Which of the Following Can Be Predicted from the Law