Kinetics Review 2

Multiple Choice

Why does a higher concentration increase the rate of reaction?

• it increases the amount of reactants

• it lowers the activation energy

• it increases the energy of reactant particles

• it increases the frequency of collision

Multiple Choice

What is the rate of reaction?

• How fast a reaction is 

• How big a reaction is

• How loud a reaction is

• How much gas a reaction produces

Multiple Choice

Grinding an effervescent tablet into powder increases the rate of reaction due to increase of

• concentration

• total surface area

• temperature

• size

Multiple Choice

Increasing pressure causes the reacting particles

• to bond together

• to repel from each other

• gain more kinetic energy

• to move closer together

Multiple Choice

What letter represents the energy of the products?

• A

• B

• C

• D

Multiple Choice

What type of reaction is this?

• Endothermic

• Exothermic

Multiple Choice

What is the ΔH of this reaction?

• 40 kJ

• 20 kJ

• 80 kJ

• -60 kJ

Multiple Choice

What letter represents ΔH?

• A

• B

• C

• D

Multiple Choice

What is the PE of the reactants?

• 100 kJ

• 175 kJ

• 50 kJ

• 75 kJ

Multiple Choice

ΔH value in an endothermic reaction is a positive number.

• True

• False

Multiple Choice

This symbol indicates that a reaction is _____

• reversible

• irreversible

Multiple Choice

What are the two factors that help determine that equilibrium is reached?

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

• Forward and reverse reaction rates are equal and concentrations are equal

• Forward and reverse reaction rates are equal and concentrations are constant

Multiple Choice

A catalyst works by

• changing the order of the reaction

• increasing the temperature

• lowering the activation energy

• making the activated complex

Multiple Choice

If the temperature is reduced, a reaction rate will ______

• increase

• decrease

• stay the same

Multiple Choice

If the concentration of a reactant is increased, the reaction rate will ___________.

• increase

• decrease

• stay the same

Multiple Choice

A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 

• catalyst

• product

• reactant

• solute

Multiple Choice

Increase in temperature of the reactants can do one of the following

• Slow collision frequency

• Allow less effective collision between the particles

• Cause particles to lose speed

• Increase collision between the particles thus increasing the rate.

Multiple Choice

The following factors affect the position of equilibrium EXCEPT

• Concentration

• Pressure

• Temperature

• States of matter

Multiple Choice

2SO_2(g)+O_2(g) ⇌ 2SO_3(g) + Heat

Adding SO_2(g) will

• shift equilibrium right

• shift equilibrium left

• increase rate of reaction

• have no change

Multiple Choice

2SO₂(g)+O₂(g) ⇌ 2SO₃(g) + Heat

Increasing the temperature will...

• shift equilibrium right

• shift equilibrium left

• increase pressure

• have no change

Multiple Choice

2SO₂(g)+1O₂(g) ⇌ 2SO₃(g) + Heat

Increasing the pressure on the system will...

• shift equilibrium right

• shift equilibrium left

• slow rate of reaction

• have no change

Multiple Choice

2SO₂(g) + O₂(g) ⇌ 2SO₃(g) + Heat

Using a catalyst

• shift equilibrium right

• shift equilibrium left

• increase the rate of reaction

• have no change

Multiple Choice

The rate of a chemical reaction is NOT affected by which of the following:

• temperature

• concentration

• particle size (surface area)

• All of these affect reaction rates

Multiple Choice

Products will form faster if____________

• the particle size of the reactants are larger.

• temperature is decreased.

• concentration of the reactants are increased.

• the reaction is not stirred.

Multiple Choice

A ______________ is a substance that increases the rate of a reaction without being used up during the reaction. 

• catalyst

• product

• reactant

• solute

Multiple Choice

Catalysts permit reactions to proceed along a ___________energy path.

• lower

• higher

• magnetic

• psycho's

Multiple Choice

Smaller particle size allows for a _________ surface area to be exposed for the reaction.

• larger

• smaller

• rectangular

• spherical

Multiple Choice

________ is the measure of how much area of an

object is exposed.

• Surface Area

• Catalyst

• Temperature

• Concentration

Multiple Choice

Grains of sugar have a greater _______ than a solid cube of

sugar of the same mass, and therefore will dissolve quicker in water.

• Surface Area

• Catalyst

• Temperature

• Concentratrion

Multiple Select

Pick the TWO (2) options that will INCREASE the rate of a reaction.

• Reducing Heat

• Adding Catalyst

• Adding Heat

• Removing Catalyst

Multiple Choice

Which of the following will lower the rate

of reaction?

• adding an enzyme to the reaction

• decreasing the temperature from 40°C to

  10°C

• breaking a chunk of calcium up into

  smaller pieces

• increasing the amount of solute

  dissolved in a solution