Chemical Equilibrium and Reaction Dynamics

What is the main focus of Le Chatlier’s Principle in chemistry?

• To determine the speed of a reaction

• To predict the direction of a reaction shift when conditions change

• To calculate the energy released in a reaction

• To identify the reactants in a chemical equation

What is a reversible reaction?

• A reaction that only goes in one direction

• A reaction that can proceed in both forward and reverse directions

• A reaction that stops once equilibrium is reached

• A reaction that only occurs under high pressure

What is chemical equilibrium?

• The point at which reactants are completely used up

• The state where the concentrations of reactants and products remain constant over time

• The moment when a reaction starts

• The condition where only products are present

Which of the following is a factor that can affect equilibrium?

• Color of the reactants

• Temperature

• Shape of the container

• Time of day

What is Le Chatelier's Principle?

• A principle that describes the speed of a reaction

• A principle that predicts how a system at equilibrium will respond to a change in conditions

• A principle that explains the color change in reactions

• A principle that determines the mass of reactants

What is a characteristic of reversible reactions?

• They only occur in one direction.

• They happen at different rates.

• They can reach equilibrium.

• They produce only reactants.

In a reversible reaction at equilibrium, what is true about the amounts of products and reactants?

• There are more products than reactants.

• There are more reactants than products.

• There is an equal amount of products and reactants.

• There are no products formed.

What does the diagram of chemical equilibrium illustrate?

• Only the forward reaction occurs.

• Only the reverse reaction occurs.

• Both forward and reverse reactions occur at the same rate.

• The reaction stops completely.

In a chemical reaction, what does the forward direction indicate?

• Reactants combine to make products

• Products combine to make reactants

• Reactants decompose into products

• Products decompose into reactants

What does the reverse direction in a chemical reaction signify?

• Reactants combine to make products

• Products combine or decompose to make reactants

• Reactants decompose into products

• Products remain unchanged