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Chemical Equilibrium and Reaction Dynamics

Chemical Equilibrium and Reaction Dynamics

Assessment

Interactive Video

Chemistry, Science, Physics

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video explains Le Chatelier's Principle, focusing on how temperature changes affect reversible reactions at equilibrium. It discusses the exothermic and endothermic nature of reactions, using the Haber process as an example. The video also covers the role of catalysts in speeding up reactions without affecting the equilibrium position.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does Le Chatelier's Principle predict when an external change is applied to a system at equilibrium?

The equilibrium will move in the direction that reduces the effect of the change.

The equilibrium will move randomly.

The equilibrium will move in the direction that increases the effect of the change.

The equilibrium will remain unchanged.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the Haber process, what is the nature of the forward reaction?

Neither endothermic nor exothermic

Endothermic

Both endothermic and exothermic

Exothermic

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the temperature is increased in the Haber process, in which direction will the equilibrium shift?

To the right

It will shift randomly

It will not shift

To the left

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the temperature of a system when an exothermic reaction moves forward?

The temperature fluctuates

The temperature remains constant

The temperature decreases

The temperature increases

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the context of Le Chatelier's Principle, what is the effect of reducing the temperature on an exothermic reaction?

Equilibrium shifts randomly

Equilibrium remains unchanged

Equilibrium shifts to the left

Equilibrium shifts to the right

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For a reaction with a positive enthalpy change, what happens to the equilibrium when the temperature is increased?

Equilibrium shifts to the right

Equilibrium shifts to the left

Equilibrium shifts randomly

Equilibrium remains unchanged

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of decreasing the temperature on a reaction with a positive enthalpy change?

Equilibrium shifts randomly

Equilibrium shifts to the right

Equilibrium shifts to the left

Equilibrium remains unchanged

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