Production of Ethanol

Question 1

Uses of ethanol

Answer 1

Detergent
Cars
Ink

Question 2

Catalyst used in industrial ethanol production

Answer 2

Phosphoric acid

Question 3

2 ways to produce ethanol

Answer 3

Hydration of ethene
Fermentation of sugars

Question 4

Is hydration of ethene exothermic or endothermic?

Answer 4

Exothermic

Question 5

Where is ethene for hydration of ethene from?

Answer 5

Cracking

Question 6

What catalyst does fermentation of sugars to make ethanol use?

Answer 6

Enzyme in yeast

Question 7

Advantages of using fermentation of sugars to produce ethanol

Answer 7

Renewable
Cheap

Question 8

Disadvantage of using fermentation of sugars to produce ethanol

Answer 8

Slow

Question 9

Effect of low temperature on ethanol production

Answer 9

Reduce reaction rate

Question 10

2 effects of high pressure on ethanol production

Answer 10

Causes ethene to polymerise
Increases cost of building & running

Question 11

Hydration of ethene reaction

Answer 11

H2C=CH2(g) + H2O(g) <—> CH3CH2OH(g)

Question 12

Fermentation of sugars reaction

Answer 12

C6H12O6(aq) —> 2C2H5OH(aq) + 2CO2(g)

Question 13

Is ethanol production from fermentation of sugars reversible?

Answer 13

No