How Far? (Equilibrium) 5.1.2

Question 1

What is Kc?

Answer 1

The Equalibrium constant

Question 2

What is the equation for Kc?

Answer 2

Kc = ([C]^c [D]^d)/([A]^a [B]^b)
If aA +bB ⇌ cC + dD
Prod/Reac

Question 3

How are the units of Kc worked out?

Answer 3

Reverse engineering the Kc equation

Question 4

How does Temperature affect the Kc of an Endothermic reaction?

Answer 4

Temp ↑;
Equilibrium constant increases
Temp ↓:
Eqiliubrium constant decreases

Question 5

How does Temperature affect the Kc of an Exothermic reaction?

Answer 5

Temp ↑:
Equilibrium constant decreases
Temp ↓:
Equilibrium constant increases

Question 6

What is and isn’t included in a Kc equation?

Answer 6

Solids, Liquids and Aqueous are not included

Gasses are included

Question 7

Define Hetrogeneous Equilibrium?

Answer 7

An equilibrium where there are multiple phases

Question 8

What is Kp?

Answer 8

The equilibrium constant that applies to gaseous systems

Question 9

What is the equation for Kp?

Answer 9

Kp = (p(C)^c p(D)^d)/(p(A)^a p(B)^b)
If aA +bB ⇌ cC + dD
Prod/Reac

Question 10

What do you put into the Kp equation to calculate Kp?

Answer 10

Partial pressures of reactants and products

Question 11

What do you put into the Kc equation to Calculate Kc?

Answer 11

Concentrations of the reactants and products

Question 12

What are the two ideal gas equations?

Answer 12

PV = nRT = NkT
P = Pressure (Pascals)
V = Volume (m³)
n = Number of Moles
R = Gas Constant (8.314 J/(mol x K))
N = Number Molecules
k = Boltzman Constant (1.38 x 10^-23 J/K)
T = Temperature (Kelvin)

Question 13

Volume occupied by a gas depends on what?

Answer 13

Temperature:
Particles move faster therefore take up more room
Pressure:
Particles are squashed closer so take up less space
Quantity of gas:
More gas requires more space ore increases pressure