Industrial Applications of Equilibrium Principles Lesson 4.

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Industrial Applications of Equilibrium Principles Lesson 4

Transcript of Industrial Applications of Equilibrium Principles Lesson 4.

Page 1: Industrial Applications of Equilibrium Principles Lesson 4.

Industrial Applications of Equilibrium Principles

Lesson 4

Page 2: Industrial Applications of Equilibrium Principles Lesson 4.

The Yield of a Reaction

High yield

The yield is the amount of products.

reactants products⇌

Low yield

reactants products⇌

Page 3: Industrial Applications of Equilibrium Principles Lesson 4.

The Haber Process is used to make ammonia

N2(g) + 3H2(g) ⇌ 2NH3(g) + energy

4 2

To ensure a high yield- Think: what will drive the rxn to products side?

low temperature

high pressure

remove NH3

add N2 and H2

Page 4: Industrial Applications of Equilibrium Principles Lesson 4.

The Haber Process is used to make ammonia

N2(g) + 3H2(g) ⇌ 2NH3(g) + energy

4 2

To ensure a high rate

high temperature- 600 0C

high pressure- 20000 Kpa

add N2 and H2

add catalysts

Page 5: Industrial Applications of Equilibrium Principles Lesson 4.

1 2

N2O4(g) ⇋ 2NO2(g) + 59 KJ

Increasing the yield

low temperature

low pressure

add N2O4

remove NO2

Page 6: Industrial Applications of Equilibrium Principles Lesson 4.

1 2

N2O4(g) ⇋ 2NO2(g) + 59 KJ

Increasing the rate

high temperature

high pressure

add N2O4

add a catalyst

Page 7: Industrial Applications of Equilibrium Principles Lesson 4.

Yield is the amount of product relative to reactants at equilibrium.

Know the difference between Rate and Yield!

Rate is how fast you get to equilibrium.

Page 8: Industrial Applications of Equilibrium Principles Lesson 4.

1. What conditions will produce the greatest yield?

P2O4(g) ⇋ 2PO2(g) ∆H = -28 kJ

A. high temperature & high pressure

C. high temperature & low pressureD. low temperature & high pressure

+ 28KJ

B. low temperature & low pressure

Page 9: Industrial Applications of Equilibrium Principles Lesson 4.

2. What conditions will produce the greatest rate?

Zn(s) + 2HCl(aq) → H2(g) + ZnCl2(aq)

A. high Zn surface area, low [HCl], low temperatureB. low Zn surface area, high [HCl], high temperature

D. high Zn surface area, high [HCl], low temperature

C. high Zn surface area, high [HCl], high temperature

Page 10: Industrial Applications of Equilibrium Principles Lesson 4.

3. What increases the rate?

Zn(s) + 2HCl(aq) → H2(g) + ZnCl2(aq)

 A. removing H2

B. removing ZnCl2(aq)

C. lowering pressureD. adding HCl

Page 11: Industrial Applications of Equilibrium Principles Lesson 4.

Graphing Equilibrium

Graphing changes imposed on the system

Page 12: Industrial Applications of Equilibrium Principles Lesson 4.

Graphing Equilibrium N2O4(g) ⇋ 2NO2(g) + 59 KJ

1. Adding [N2O4]

     

[N2O4]

[NO2] 2x

x

Page 13: Industrial Applications of Equilibrium Principles Lesson 4.

Graphing Equilibrium 

N2O4(g) ⇋ 2NO2(g) + 59 KJ

2. Removing [NO2 ]

     

[N2O4]

[NO2]

2x

x

Page 14: Industrial Applications of Equilibrium Principles Lesson 4.

Graphing Equilibrium N2O4(g) ⇋ 2NO2(g) + 59 KJ

3. Increase Temperature

     

[N2O4]

[NO2] 2x

x

Page 15: Industrial Applications of Equilibrium Principles Lesson 4.

Graphing Equilibrium N2O4(g) ⇋ 2NO2(g) + 59 KJ

[N2O4]

[NO2]

2x

x

4. Decrease Volume- all concentrations + pressure goes up!

Page 16: Industrial Applications of Equilibrium Principles Lesson 4.

Page 55

Questions 27 + 28