Which term is used to describe equilibrium between different substances as reactants and products?

• Chemical equilibrium

• Physical equilibrium

• Dynamic equilibrium

• Irreversible equilibrium

How can chemical equilibrium be disturbed?

• By changing the temperature of the system

• By altering the pressure of the system

• By adding or removing reactants or products

• By increasing the surface area of the reaction vessel

Physical equilibrium involves the equilibrium between different phases of the same substance.

• TRUE

• FALSE

Which of the following statements is true about a chemical equilibrium state?

• The concentrations of both reactants and products remain constant

• The reaction stops completely

• The forward reaction rate is faster than the reverse reaction rate

• The temperature increases

The vaporization of water in a closed container is an example of chemical equilibrium.

• TRUE

• FALSE

The equilibrium constant (K) is a constant value that depends on the initial concentrations of reactants and products.

• TRUE

• FALSE

How is the equilibrium constant affected if the stoichiometric coefficients of a balanced equation are multiplied by a factor?

• The equilibrium constant remains unchanged

• The equilibrium constant is multiplied by the same factor

• The equilibrium constant is divided by the same factor

• The equilibrium constant becomes the reciprocal of the factor

Why is it important to study the equilibrium constant in chemical reactions?

• To determine the concentration of reactants and products at equilibrium

• To optimize reaction conditions for maximum product formation

• To identify the color changes associated with the reaction

• To calculate the rate of the reaction

How is the equilibrium constant defined?

• It is defined as the sum of the concentrations of reactants and products at equilibrium

• It is defined as the ratio of the initial concentrations of reactants and products

• It is defined as the ratio of the equilibrium concentrations of products to reactants

• It is defined as the difference between the initial and equilibrium concentrations of reactants and products

The equilibrium constant (K) measures the extent to which a reaction proceeds to form products.

• TRUE

• FALSE