Le Chatelier Principle

Le Chatelier Principle

11th Grade

25 Qs

quiz-placeholder

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Le Chatelier Principle

Le Chatelier Principle

Assessment

Quiz

Science

11th Grade

Hard

NGSS
HS-PS1-5, HS-PS1-6, HS-PS1-4

Standards-aligned

Created by

Lisa Thompson

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Equilibrium for 2CrO42- + 2H+ → Cr2O72- + H2O. What happen when H+ ion are added to the system?

Position of equilibrium will shift to left

Color of system will turn from orange to yellow

Kc will be higher

Equilibrium will shift to right to decrease the added H+ ion

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-6

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

For CoCI42- +6H2O →Co(H2O)62+ + 4CI-. What happen when CI- ions are added?

Position of equilibrium will shift to right

Color of system will turn from blue to pink

Concentration of reactants and products remain unchanged

Equilibrium shift to left to reduce the added CI- ions

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

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 Kc will increase

More particles on the right, so pressure can increase again

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

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

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What does Le Chatelier's Principle state about a system at equilibrium when it is subjected to a change in concentration, temperature, or pressure?

The system will shift in the direction that increases the change.

The system will remain unchanged.

The system will shift in the direction that opposes the change.

The system will shift in random directions until a new equilibrium is established.

Tags

NGSS.HS-PS1-5

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

According to Le Chatelier's Principle, if the concentration of a reactant is increased, the equilibrium of the reaction will:

Shift to the left, favoring the formation of reactants

Shift to the right, favoring the formation of products

Remain unchanged

Increase the overall reaction rate without shifting the equilibrium

Tags

NGSS.HS-PS1-5

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

2SO2(g)+O2(g)⇌2SO3(g)
Adding SO2(g) will

shift equilibrium right

shift equilibrium left

increase rate of reaction

have no change

Tags

NGSS.HS-PS1-5

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