CHEM Sem II Unit 8 Exam Review

What does a catalyst do the reaction rate of a chemical reaction?

• Decreases it

• Increases it

• No change

Which of the following will not increase the rate of reaction?

• Increased temperature

• Increased catalyst

• Addition of catalyst

• Increase pressure

Which type of reaction is the only type to be able to reach equilibrium?

• combustion

• reversible

• decomposition

What is equatl at equilibrium?

• the rates of the forward and reverse reaction
• the concentration of the products
• the concentration of the reactants

The brackets, [ ] represent what quantity of reactants and products?

• concentration
• mass
• time

What does LeChatelier's Principle help us predict?

• The shift in a system's equilibrium
• the concentration of the products
• The time it takes to reach equilibrium

When stress is applied to a system, what will happen according to LeChatlier's Principle?

• Increase the stress

• Induce the Stress

• Counteract/reduce the stress

After equilibrium, what happens to the reactant concentration?

• increases
• decreases
• remains the same as before

What does chemical kinetics the study of?

• chemical properties
• chemical concentration
• chemical kinetics

In the reaction H2 + O2 <-> H2O, what happens when hydrogen is removed?

• shift to the left
• shift to the right
• neither