Reversible reaction + Dynamic equilibrium

Question 1

What is a reversible reaction?

Answer 1

A chemical reaction in which the products can react to form the starting reactants

Question 2

What symbol is used to show it’s a reversible reaction?

Answer 2

⇌

Question 3

What three things can affect the direction of the reaction?

Answer 3

Concentration
Temperature
Pressure

Question 4

What is equilibrium (aka dynamic equilibrium)?

Answer 4

When the forward and reverse reactions are happening at the same time and the same rate.
They occur in a closed system.

Question 5

What’s a closed system?

Answer 5

No reactants are added and no products are removed.

Nothing can go in or out

Question 6

What is Le Chatelier’s principle?

Answer 6

If a system in equilibrium is subjected to a change in conditions, then the system will shift to resist the change or minisime the effect of it.

Question 7

When dealing with reversible reation question, what is the first step you should do?

Answer 7

1a - lable the arrows

1b - identify the change from the question

Question 8

What is the second step in a reversible reaction question?

Answer 8

Describe the action that is the direct opposiite to the change in step 1b

Question 9

What is the third step when dealing with a reversible reaction question?

Answer 9

From the equation, identify the direction of the arrow which achieves the action mentioned in step 2

Question 10

What is the additional step required to get full marks on a reversible reaction question?

Answer 10

“The system will continue to shift until equilibrium is restored”

Question 11

What else should you mention when the change is regarding pressure?

Answer 11

Mention which side (reactants or products) has more moles
More moles = High pressure side
Less moles = Low pressure side