5.1.2 How far?

Question 1

What does Kc represent?

Answer 1

A mathematical representation of the ratio of products to reactants

Question 2

If Kc is greater than 1 are there more products or reactants?

Answer 2

Products

Question 3

If Kc is smaller than 1 are there more products or reactants?

Answer 3

Reactants

Question 4

What is homogenous equilibrium?

Answer 4

Everything is in the same state

Question 5

What is heterogenous equilibrium?

Answer 5

Things are in different states

Question 6

What does a Kc equation only include?

Answer 6

Gases - solids and liquids are not part of Kc

Question 7

How do you set up a Kc equation?

Answer 7

products / reactants

Question 8

What acronym should be used when calculating amounts of equilibrium (Kc)?

Answer 8

ICE
I - initial
C - change
E - equilibrium

Question 9

When calculating a Kc that has a volume different to 1 what do you need to do?

Answer 9

Always divide by the volume before putting into Kc equation

Question 10

What is the relationship between Kc and Kp?

Answer 10

As pressure and conc are proportional to each other Kc has a direct relationship with Kp

Question 11

What two things need to be calculated for Kp?

Answer 11

Mole fraction then partial pressure

Question 12

In a Kp equation what comes before the round brackets?

Answer 12

p

Question 13

What is the mole fraction of a gas?

Answer 13

The same as its proportion by volume to the total volume of gases in a gas mixture

Question 14

What is the equation for mole fraction?

Answer 14

Number of moles in A
——————————-
Total number of moles in
gas mixture (A+B+C)

Question 15

What do all mole fractions add up to?

Answer 15

1

Question 16

What are the steps in Kp?

Answer 16

ICE
Mole fraction
Partial pressure
Kp

Question 17

What is the equation for partial pressure?

Answer 17

Mole fraction A x total pressure of gas A

Question 18

What do the partial pressure of all gases equal to

Answer 18

Total pressure in the system e.g. 200kPa

Question 19

How does Kc/Kp increase in terms of numerator and denominator?

Answer 19

Numerator increases, denominator decreases

Question 20

How does Kc/Kp decrease in terms of numerator and denominator?

Answer 20

Numerator decreases, denominator increases

Question 21

What factor is the only factor that can change Kc/Kp?

Answer 21

TEMPERATURE

Question 22

How does a catalyst affect Kc/Kp?

Answer 22

Does not change Kc/Kp only reaches Kc/Kp quicker

Question 23

When talking about changes in equilibrium how should you talk about the numbers?

Answer 23

Talk about numbers at start, middle and after equilibrium