Equilibrium Constant Kc

Question 1

What is the equation for Kc?

Answer 1

[products]^ [products]^ / [reactants]^ [reactants]^

Question 2

How is Kc rearranged to find reactants?

Answer 2

[reactants]^ = [products]^ / Kc

Question 3

How is the Kc equation rearranged for products?

Answer 3

[products]^ = Kc x [reactants]^

Question 4

What quantities are used for Kc?

Answer 4

concentration quantities

Question 5

What is Kc measured in?

Answer 5

moldm-3

Question 6

How are Kc quantities calculated?

Answer 6

moles/volume(dm3)

Question 7

What is needed in order to calculate equilibrium quantities?

Answer 7

1. molar ratio
2. initial moles
3. change in moles
   used to find equilibrium moles

Question 8

How does temperature DECREASE effect Kc in an ENDOTHERMIC reaction?

Answer 8

decreases

Question 9

How does temperature INCREASE effect Kc in an ENDOTHERMIC reaction?

Answer 9

increases

Question 10

How does temperature INCREASE effect Kc in an EXOTHERMIC reaction?

Answer 10

decreases

Question 11

How does temperature DECREASE effect Kc in an EXOTHERMIC reaction?

Answer 11

increases

Question 12

If Kc is greater than one, where does the equilibrium move?

Answer 12

to the right/forwards direction

Question 13

If Kc is less than one, where does equilibrium move?

Answer 13

to the left/backwards direction