19.3 controlling the position of equilibrium Flashcards Preview

Fckn Chemistry Module 5 > 19.3 controlling the position of equilibrium > Flashcards

Flashcards in 19.3 controlling the position of equilibrium Deck (26):
1

When when the rate constant k=1 what can be said about the equilibrium?

It is halfway between the products and the reactant

2

When the rate constant k=100 what can be said about the equilibrium?

It is well in favour of the products

3

When the rate constant k=0.01 what can be said about the equilibrium?

It is well in favour of the reactants

4

What is the only condition that can affect the rate constant k?

Temperature

5

In an exothermic reaction in equilibrium, what effect does increasing the temperature have on Kp?

Kp decreases so the system is no longer in equilibrium, the ratio for Kp is now greater than Kp

6

In an exothermic reaction equilibrium, what effect does increasing the temperature have on partial pressure?

Partial pressure of products decreases and the partial pressure of reactants increases

7

In an exothermic reaction in equilibrium, what effect does increasing the temperature have on equilibrium position?

Position shifts to the left and the new equilibrium is reached where Kp ratio= new Kp

8

In an exothermic reaction in equilibrium, what effect does decreasing the temperature have on Kp?

Kp increases so the system is no longer in equilibrium, the ratio for Kp is now less than Kp

9

In an exothermic reaction in equilibrium, what effect does decreasing the temperature have on partial pressure?

Partial pressure of products increases and the partial pressure of reactants decreases

10

In an exothermic reaction in equilibrium, what effect does decreasing the temperature have on equilibrium position?

Position shifts to the right and the new equilibrium is reached where Kp ratio= new Kp

11

In an endothermic reaction in equilibrium, what effect does increasing the temperature have on Kp?

Kp increases so the system is no longer in equilibrium, the ratio for Kp is now less than Kp

12

In an endothermic reaction in equilibrium, what effect does increasing the temperature have on partial pressure?

Partial pressure of products increases and the partial pressure of reactants decreases

13

In an endothermic reaction in equilibrium, what effect does increasing the temperature have on equilibrium position?

Position shifts to the right and the new equilibrium is reached where Kp ratio= new Kp

14

In an endothermic reaction in equilibrium, what effect does decreasing the temperature have on Kp?

Kp decreases so the system is no longer in equilibrium, the ratio for Kp is now greater than Kp

15

In an endothermic reaction in equilibrium, what effect does decreasing the temperature have on partial pressure?

Partial pressure of products decreases and the partial pressure of reactants increases

16

In an endothermic reaction in equilibrium, what effect does decreasing the temperature have on equilibrium position?

Position shifts to the left and the new equilibrium is reached where Kp ratio= new Kp

17

What effect does increasing the concentration of the reactant (when in equilibrium) have on Kc?

The ratio of Kc is now less than Kc so the system is not in equilibrium

18

What effect does increasing the concentration of the reactant (when in equilibrium) have on concentration?

Concentration of product increases and the concentration of reactant decreases

19

What effect does increasing the concentration of the reactant (when in equilibrium) have on equilibrium position?

The equilibrium position shifts to the right and the new equilibrium is established where the Kc ratio is restored

20

What effect does decreasing the concentration of the reactant (when in equilibrium) have on Kc?

The ratio of Kc is now greater than Kc so the system is not in equilibrium

21

What effect does decreasing the concentration of the reactant (when in equilibrium) have on partial pressure?

Concentration of product decreases and the concentration of reactant increases

22

What effect does decreasing the concentration of the reactant (when in equilibrium) have on equilibrium position?

The equilibrium position shifts to the left and the new equilibrium is established where the Kc ratio is restored

23

What effect does increasing the pressure (when in equilibrium and the power on top is greater than on bottom) have on Kp?

Ratio for Kp is now greater than Kp and the system is no inter in equilibrium

24

What effect does increasing the pressure (when in equilibrium and the power on top is greater than on bottom) have on partial pressure?

The partial pressure of products must decrease and the partial pressure of reactants a must increase

25

What effect does increasing the pressure (when in equilibrium and the power on top is greater than on bottom) have on equilibrium position?

Equilibrium shifts to the left and the new equilibrium is established where Kp ratio is restored

26

How do catalysts affect equilibrium?

They only affect they have is that they speed up the rate at which the reaction reaches equilibrium. Both the forward and backward reactions are sped up by the same factor so equilibrium position is not changed