Equilibrium ii (11)

Question 1

The only factor that affects the eq. constant

Answer 1

Temperature

Question 2

What are the units for Kc?

Answer 2

Must be worked out using the concentrations. Each species being in Moldm-3

Question 3

What is NEVER included in Kc expression?

Answer 3

Solids

Question 4

Partial pressure=

Answer 4

Mole fraction * total pressure

Question 5

Mole fraction of species x =

Answer 5

No. moles of species x / total No. moles of all species

Question 6

Kp units

Answer 6

KPa for each species

But must be worked out each time

Question 7

Kp=

Answer 7

p(C)p(D) / p(A)p(B)

p=partial pressure

Question 8

If you half the volume of a container, what happens to pressure of the system?

Answer 8

Doubles

Question 9

Effects of temperature equation

Answer 9

RlnK=delta S system + (-delta H) / T

Question 10

All exothermic reactions have what delta H

Answer 10

Negative

Making (-delta H / T) positive as - - = +

Question 11

All endothermic reactions have what delta H ?

Answer 11

Positive

So (-delta H / T) is negative as + - = -

Question 12

Effects of T summary: Exothermic

Answer 12

Increasing T = lower K

Decreasing T = higher K

Question 13

Effects of T summary: Endothermic

Answer 13

Increasing T = higher K

Decreasing T = lower K