Free Printable Le Chateleier's Principle

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Le Chateleier's Principle

Total questions: 20

Worksheet time: 17mins

Name

Class

Date

The following factors affect the position of equilibrium EXCEPT

Concentration

Pressure

Temperature

States of matter

For N₂O₄ (colorless)→ 2NO₂(brown). By reducing pressure, equilibrium is shift to right. WHY?

Shift to the right will increase the rate of reaction

Color of system will turn from colorless to brown.

More particles on the right, so K_c will increase

More particles on the right, so pressure can increase again

For N₂ + 3H₂ →2NH₃. When pressure is increased the equilibrium shift to right. Why?

To increase the amount of products

To reduce the pressure, as right has less number of molecule

K_c will increase when it is shifted to the right

So it will increase the rate of reaction

For N₂O₄ → NO₂ (ΔH = +ve). What will happen when temperature is increased?

Position of equilibrium will shift to left

Position of equilibrium will shift to right

No change in position of equilibrium

Equlibrium will not be affected

N₂O₄→ NO₂ (ΔH = +ve). Why when temperature is increased position of equilibrium is shifted to RIGHT?

Forward reaction is endothermic, thus reducing the temp

Forward reaction is exothermic, thus reducing the temp

Forward reaction is endothermic, thus increasing the temp

Forward reaction is exothermic, thus increasing the temp

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

2SO₂(g)+O₂(g) ⇌ 2SO₃(g) + Heat

Increasing the temperature will...

shift equilibrium right

shift equilibrium left

increase pressure

have no change

2SO₂(g)+O₂(g) ⇌ 2SO₃(g) + Heat

Adding SO₃(g) will

shift equilibrium right

shift equilibrium left

increase K

have no change

2SO₂(g)+1O₂(g) ⇌ 2SO₃(g) + Heat

Increasing the volume of the container will...

shift equilibrium right

shift equilibrium left

slow rate of reaction

have no change

10.

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

11.

2SO₂(g) + O₂(g) ⇌ 2SO₃(g) + Heat

Using a catalyst

shift equilibrium right

shift equilibrium left

increase the rate of reaction

have no change

12.

1N₂ + 3H₂ →2NH₃

When the pressure on the system is increased, the equilibrium position shifts to the right. Why?

To increase the amount of products

To reduce the pressure, as the right side has fewer molecules of gas

K_eq will increase when it is shifted to the right

To increase the pressure, as the right side has more molecules of gas

13.

Heat + 1 N₂O₄ → 2 NO₂

What will happen when the temperature is increased?

Position of equilibrium will shift to left and become lighter in color

Position of equilibrium will shift to right and become more brown

No change in position of equilibrium

Position of equilibrium will shift to right and become lighter in color

14.

2. Which is an example of inert gas?

Argon

Hydrogen

Oxygen

15.

3. In change in pressure and volume, if the pressure decreases the system will shift to the?

location of more moles

shift to the left

no shift

16.

4. When a system at equilibrium is subject to change the system tries to minimize the change by?

dissappearing

going to the direction where it will relieve the stress

expand

17.

5. Reversible reaction is?

cannot be changed

stays the same

the reactants will produce products from products it can go back to be reactants

18.

7. When heat is released, what type of reaction takes place?

Exothermic

Osmosis

Endothermic

19.

8. Heat is the reactant in the system, $\Delta$ H=+

Exothermic

Osmosis

Endothermic

20.

9. This Law "states that any change to system at equilibrium wil result in an expected shift that countereact the change"

Le Chatelier Principle

Boyles Law

Law of thermodynamics

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Le Chateleier's Principle

Total questions: 20

Worksheet time: 17mins

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