A2: Equilibria

Question 1

Effect on Kc when increasing temperature

Answer 1

if endothermic, Kc will increase, if exothermic Kc will decrease

Question 2

Does Kc change for when concentration or pressure changes?

Answer 2

No

Question 3

How to answer a question on how Kc controls the position of equilibrium

Answer 3

answer:
1) What happens to the value of Kc
2) What happens to the denominator and numerator of the Kc expression
3) What happens to the position of equilibrium/yield

Question 4

Esterification steps for determining properties present at equilibrium

Answer 4

1) Add a known amount of liquid into flask, seal, leave to reach equilibrium
2) Titrate contents with NaOH to determine the amount of CH3COOH at equilibrium
3) Use ICE method

Question 5

Mole fraction equation

Answer 5

moles of gas/total gaseous moles

Question 6

Partial pressure equation

Answer 6

Mole fraction x total pressure

Question 7

Effect on Kp when temperature increases

Answer 7

endothermic - Kp increases
exothermic - Kp decreases