Equilibrium

A reversible chemical reaction reaches equilibrium when reactant and product concentrations remain constant, despite ongoing reactions. This state is called dynamic equilibrium. The forward and reverse reaction rates are balanced, resulting in no overall change. External factors like pressure and temperature can influence equilibrium.

What happens to the concentrations of reactants and products when a reversible reaction reaches equilibrium?

• They decrease.

• They increase.

• They fluctuate randomly.

• They remain constant.

What term is used to describe the state where particles continue to react but concentrations remain unchanged?

• Dynamic equilibrium

• Static equilibrium

• Chemical stasis

• Reaction balance

In a dynamic equilibrium, what is true about the rates of the forward and reverse reactions?

• The forward reaction is faster.

• The reverse reaction is faster.

• Both reactions stop.

• Both reactions occur at the same rate.

Which of the following can affect the equilibrium of a chemical reaction?

• Volume of the container

• Pressure and temperature

• Color of the reactants

• Shape of the molecules

How can altering temperature influence a chemical equilibrium?

• It can change the color of the products.

• It can shift the equilibrium position.

• It can stop the reaction completely.

• It has no effect on equilibrium.