Free Printable Kinetics

Worksheets

Kinetics

Total questions: 45

Worksheet time: 27mins

Name

Class

Date

Which letter corresponds with the potential energy of the reactants?

(a)

Which letter corresponds with the potential energy of the products?

(a)

Which letter corresponds with the activation energy?

(a)

Which letter corresponds with the $\Delta H$ ?

(a)

Which letter corresponds with the energy of the activated complex?

(a)

2NOCl (g) $\leftrightarrow$ 2NO (g) + Cl₂ (g)

How does the reaction shift if [NOCl] is increased?

Forward/Right

Reverse/Left

2NOCl (g) $\leftrightarrow$ 2NO (g) + Cl₂ (g)

How does the reaction shift if [NO] is decreased?

Forward/Right

Reverse/Left

2NOCl (g) $\leftrightarrow$ 2NO (g) + Cl₂ (g)

How does the reaction shift if [Cl₂] is increased?

Forward/Right

Reverse/Left

2NOCl (g) $\leftrightarrow$ 2NO (g) + Cl₂ (g)

How does the reaction shift if pressure is increased?

Forward/Right

Reverse/Left

10.

2CH₄ (g) $\leftrightarrow$ C₂H₂(g) + 3H₂ (g) + $\Delta$

Given the reaction above, which way would the reaction shift if the temperature is decreased?

Forward/Right

Reverse/Left

11.

2CH₄ (g) $\leftrightarrow$ C₂H₂(g) + 3H₂ (g) + $\Delta$

Given the reaction above, which way would the reaction shift if the pressure is decreased?

Forward/Right

Reverse/Left

12.

Which of the following will increase the number of effective collisions during a chemical reaction?

Adding a catalyst

Increasing the surface area

Decreasing the temperature

Increasing the reactant concentration

13.

What is required for a chemical reaction to occur

Molecules must collide

Collisions must have enough energy

Collisions must have the correct orientation

14.

Which factors decrease the rate of a reaction?

Adding a catalyst

Decreasing the temperature

Increasing the surface area

Decreasing the concentration of the reactants

15.

Which of the following affects the rate of a reaction?

Temperature

Concentration

Color

Pressure

16.

The rate of a reaction is how (a) the reaction is.

17.

Which will have a higher surface area?

A whole seltzer tablet

A seltzer tablet cut in half

A seltzer tablet cut into quarters

A seltzer tablet ground into powder

18.

How does a catalyst increase the rate of a chemical reaction?

Increases the activation energy

Decreases the activation energy

Increases the energy of the particles

Decreases the energy of the particles.

19.

Which of the following are not true for chemical equilibrium?

The reaction comes to a stop.

The forward and reverse reactions happen at the same rate.

There is no observable change in the reaction.

The concentration of all chemicals will be equal.

20.

Which way will the equilibrium shift for an increase pressure for the following reaction?

CCl₄ (g) $\leftrightarrow$ C(s) + 2Cl₂ (g)

Forward/Right

Reverse/Left

21.

____ states that chemical equilibrium will shift in a way that reduces the stress placed upon the system.

1st Law of Thermodynamics

Le Chatelier's Principle

2nd Law of Thermodynamics

Newton's Law of Motion

22.

If an endothermic reaction has reached equilibrium, increasing the temperature will:

Favor the forward reaction

Favor the reverse reaction

Favor both the forward and reverse reaction

Have no effect on the equilibrium

23.

Which will cause an equilibrium to shift to relieve stress?

Increasing Temperature

Decreasing the concentration of a product

Increasing the concentration of a reactant

Increasing the pressure of gas

24.

According to collision theory, particles must:

Collide with correct orientation

Be kept under immense pressure

Collide everywhere

Be above their melting points

25.

The rate of a reaction depends upon:

The concentration of the reactants

The temperature of the reaction

Whether a catalyst is used

The nature of the reactants

All of the above

26.

Which letter shows the activation energy in the graph?

27.

A catalyst is a substance

That increases the rate of reaction and is changed during the reaction

That increases the rate of reaction and increases the amount of mass(es) formed in the reaction.

That has no effect on the rate of reaction.

That increases the rate of reaction but is not used up in the reaction.

28.

Which one of the following statements about catalysts is true?

Catalysts increase the temperature of a chemical reaction.

Catalysts increase the energy required for a reaction to take place.

Catalysts are chemically unchanged at the end of a reaction.

All catalysts are solid.

29.

What effect will decreasing the temperature have on the rate of a chemical reaction?

Decrease the rate of reaction

Increase the rate of reaction

There will be no effect on the rate of reaction

The reaction will stop.

30.

Why does the rate of reaction increase when powdered calcium carbonate is used instead of lumps of marble chips.

There is an increase in temperature of the particles.

There is an increase in the concentration of the reactants.

Powdered calcium carbonate acts as a catalyst.

There is an increase in surface area of the calcium carbonate.

31.

If we increase the concentration of a reactant, what happens to the collisions between particles?

There are the same number of collisions, but they have more energy.

There are fewer collisions.

There are the same number of collisions, but they have less energy.

There are more collisions.

32.

By increasing the temperature of a chemical reaction, what happens to the collisions between particles?

There are fewer collisions taking place.

There are more collisions and the particles have more energy.

There are the same number of collisions and the particles have more energy.

There are more collisions, but the particles have less energy.

33.

Which set of conditions will increase the rate of chemical reaction?

Decreased temperature and decreased concentration of reactants.

Decreased temperature and increased concentration of reactants.

Increased temperature and decreased concentration of reactants.

Increased temperature and increased concentration of reactants.

34.

The particles of reactants must collide in order for a reaction to take place. The fewer the collisions, the slower the rate of reaction.

Which one of the following will increase the rate of reaction?

Decreasing the pressure of gaseous reactants.

Decreasing the concentration of solutions taking part in the reaction.

Breaking a solid reactant into many small pieces.

Lowering the temperature of the reactants?

35.

Which of the following statements about catalysts is TRUE?

I. A catalyst will increase the concentration of the reactants.

II. A catalyst reduces the energy needed for a reaction to take place.

III. A catalyst will increase the number of collisions between the reactants.

IV. A catalyst increases the energy needed for a reaction to take place.

I only

II only

II and III only

I, II, and IV only

36.

Consider the following factors

I Reactant particles collide

II Sufficient kinetic energy is present

III A favorable geometry exists

IV Catalysts are present

Which combination of the above factors is required for successful collisions?

I only

II and III only

I, II, and III only

I, II, III, and IV only

37.

Which one of the following reactions will start with the highest rate?

5 g of limestone powder in 100 mL of 0.1 M HCl at $45\degree C$

5 g of limestone chips in 100 mL of 0.1 M HCl at $25\degree C$

5 g of limestone chips in 100 mL of 0.1 M HCl at $45\degree C$

5 g of limestone powder in 100 mL of 0.1 M HCl at $25\degree C$

38.

In a reaction between two gases, which one of the following factors will not affect the rate of reaction?

The volume of the container that the gas is in

The temperature of the gases

The color of the gases

The pressure of the gases

39.

What effect does doubling the concentration of one of the reactants have on the rate of reaction?

It decreases the rate of reaction

The rate of reaction is halved

It increases the rate of reaction

It has no effect

40.

The information in the figure represents which principle?

Pauli Exclusion Principle

Le Chatelier's Principle

Aufbau Principle

Avogadro's Principle

41.

What principle states that when a system in chemical equilibrium experiences a disturbance, it will shift in equilibrium composition in a way that tends to counteract this change?

Hund's Rule

Law of Conservation of Mass

Le Chatelier's Principle

Heisenberg's Uncertainty Principle

42.

$N_2\ \left(g\right)\ +3H_2\ \left(g\right)\leftrightarrow\ 2NH_3\ \left(g\right)\ +\ \Delta$

Assume the reaction is at equilibrium. Which of the following would shift the equilibrium to the left?

A decrease in pressure

A decrease in temperature

A decrease in the amount of $NH_3$

An increase in the amount of $N_2$

43.

$2SO_2\ \left(g\right)\ +\ O_{2\ }\left(g\right)\ \leftrightarrow\ 2SO_{3\ }\left(g\right)\ +\ \Delta$

Adding $SO_2\ \left(g\right)$ will:

Shift equilibrium right

Shift equilibrium left

Increase the rate of the reaction

Have no change

44.

$2SO_2\ \left(g\right)\ +\ O_{2\ }\left(g\right)\ \leftrightarrow\ 2SO_{3\ }\left(g\right)\ +\ \Delta$

Increasing pressure will:

Shift equilibrium right

Shift equilibrium left

Increase the rate of the reaction

Have no change

45.

$2SO_2\ \left(g\right)\ +\ O_{2\ }\left(g\right)\ \leftrightarrow\ 2SO_{3\ }\left(g\right)\ +\ \Delta$

Increasing temperature will:

Shift equilibrium right

Shift equilibrium left

Increase the rate of the reaction

Have no change

Reset

Kinetics

Total questions: 45

Worksheet time: 27mins

Similar Resources on Wayground