Effects Of Changes On Equilibrium

Question 1

Where does the equilibrium shift if the the concentration of reactants
Increase
Decrease

Answer 1

Increase = to the right
Decrease = to the left

Question 2

Where does the equilibrium shift it the concentration of products
Increase
Decrease

Answer 2

Increase = to the left
Decrease = to the right

Question 3

If the number of moles of reactants is more than the products and the pressure is increased where does equilibrium shift

Answer 3

To the right

Question 4

If the number of moles of reactants is less than the number of moles of the products and the pressure increases the equilibrium shifts

Answer 4

To the left

Question 5

If the pressure increases and the reactants and products have the same number of moles the equilibrium shifts to the

Answer 5

It stays the same there is no change

Question 6

In temperature increase where does the equilibrium shift if the forwards reaction is
Exothermic /\H -ve
Endothermic /\H +ve

Answer 6

To the left
To the right

Question 7

In temperature decreases where does the equilibrium shift if the forwards reaction is
Exothermic /\H -ve
Endothermic /\H +ve

Answer 7

To the right
To the left

Question 8

What happens to the rate of forward and backward reactions when a catalyst is added

Answer 8

They both increase

Question 9

Do catalysts change the position of equilibrium

Answer 9

NO

Question 10

What do catalysts do

Answer 10

Decrease the time taken for equilibrium to be reached

Question 11

Give the equation for the yellow <—> orange experiment

Answer 11

2CrO4 -2 (aq) + 2H + (aq) <—> Cr2O7 -2 (aq) + H2O(l)

Question 12

In the yellow orange experiment which way does the equilibrium move when the H+ ions are added

Answer 12

To the right

Question 13

In the yellow orange experiment which way does the equilibrium move when the OH- ions are added

Answer 13

To the left