Equilibrium

Question 0

If none of the products or the reactants are removed from a reversible reaction then … And … At the …

Answer 0

Reactants make products
Products make reactants
Same time (AKA dynamic equilibrium)

Question 1

Example of a reversible reaction is?

Answer 1

• Heating copper sulphate
• Hydrated copper sulphate —> anhydrous copper sulphate + steam
• CuSO4.5H2O CuSO4 + 5H2O

Question 2

Haber process:
3H2(g) + N2 (g) —> 2NH3(g)
nitrogen + hydrogen (endothermic) –> [ammonia] + heat (exothermic)

If increase of reaction there is …. Product produced

Answer 2

More

Question 3

Equilibrium: not the … That is constant. Only the … is constant. You could change the: pressure, temp, concentration

Answer 3

Amount

Concentration

Question 4

Haber process ideal temp & pressure

Answer 4

450oC

200-350 atmospheres

Question 5

What is the catalyst used in making ammonia to increase the rate of reaction in both directions, reducing the need for a higher temperature and if this were the case making the yield lower

Answer 5

Iron

Question 6

Why is 200 atmospheres ideal for making ammonia?

Answer 6

Safe

Less expensive

Question 7

Sources of nitrogen and hydrogen in haver process

Answer 7

Nitrogen —> air

Hydrogen —> methane + water

Question 8

Air –> 78% of air is nitrogen –> easily obtained by fractional distillation
Methane + water –> hydrogen obtained from methane –> methane +steam -> carbon dioxide + hydrogen

Answer 8

Converter 200 atmospheres
450oC
Iron catalyst –> ammonia 28% yield
72% recycled unreached gas

Question 9

When the forward and backward reaction go at the same rate this is called

Answer 9

Dynamic equilibrium

Question 10

In reactions you could change the

Answer 10

Pressure
Temperature
Concentration

Question 11

An example of a reversible reaction is heating ammonium chloride

Answer 11

Ammonium chloride –> ammonia + hydrogen chloride

NH4Cl(s) NH3(g) + HCl(g)