Equilibrium 7.1

When a reversible reaction is said to "favor the forward reaction," we should expect that:

• The concentration of reactants will increase

• The concentration of products will increase

• The rate of the forward and reverse reactions are equal

• The concentration of products and reactants are equal

At what point has the reaction reached equilibrium?

• A

• B

• C

• E

Which of the following is true about a reaction in equilibrium?

• There are no observable changes

• The reaction has stopped

• The reaction has gone to completion

• The forward reaction is faster than the reverse reaction

Define chemical equilibrium.

• A reaction is reversible.
• The concentration of the reactants is equal to the concentration of the products.
• The rate of a forward reaction is equal to the rate of the reverse reaction.
• The reaction stops and no further change in concentration occurs.

This symbol indicates that a reaction is ____________

• reversible
• irreversible

What are [A] and [B]?

• concentration of reactants
• concentration of products
• energy of reactants
• energy of products

If a reaction is reversible and has reached equilibrium, what can be said about the amounts of reactants and products?

• some reactant, some product
• no reactant, all product
• all reactant, no product

What are the two factors to look for when determining if the reaction is at equilibrium?

• Forward reaction rate is faster than the reverse and concentrations are equal

• Forward and reverse reaction rates are equal and concentration is constant

• Forward and reverse reaction rates are equal and concentration is equal

• Forward reaction rate is faster than the reverse and concentration is equal

What is the activation energy?

• the quantity of heat absorbed in a reaction

• the minimum energy needed to begin a reaction

• the energy given off after reactants collide.

• the temperature at which the reaction occurs

A complete reaction is in which:

• All the reactants convert into products

• All the reactants do not convert into products

• Half reactants convert into products

• only 10% reactants convert into products