Ethanol Produxtion

Question 1

What is ethanol used for?

Answer 1

-Solvent in cosmetics and perfumes
-The alcohol found it alcoholic drinks

Question 2

What are the 2 different methods of producing ethanol?

Answer 2

-Producing ethanol from crude oil
-Producing ethanol by fermentation

Question 3

How is ethanol produced from crude oil?

Answer 3

Ethene is made when crude oil fractions are cracked to form an alkane and an alkene.
Ethene is then hydrated by adding water in the presence of a concentrated phosphoric catalyst

Question 4

What conditions are needed to get ethanol from crude oil?

Answer 4

Reaction name: Hydration
Conditions:
-Concentrated phosphoric catalyst
-Steam -300 degree temp.
-70 atm pressure

Question 5

How is ethanol produced by fermentation?

Answer 5

-Carbohydrates in plants are converted into sugars.
-They are fermented into ethanol using enzymes found in yeast. The carbohydrates can come from crops like sugar cane or sugar beet.

Question 6

What are the conditions needed to produce ethanol from fermentation?

Answer 6

-Reaction name: Fermentation/ anaerobic respiration
Conditions:
-Yeast enzymes
-Temp of -35. too high and enzymes will denature. too cold and rate of reaction
too low
NO OXYGEN

Question 7

What are the advantages of hydrating ethene? (Ethanol produced by crude oil)

Answer 7

-Large scale method
-High purity product
-Continuous production method

Question 8

What are the disadvantages of hydrating ethene? (Ethanol from crude oil)

Answer 8

-High temp and pressure so ⬆️ cost
-Crude oil is non-renewable (will run out)

Question 9

What are the advantages of producing ethanol by fermentation?

Answer 9

-Low cost
-Suitable for developing countries because not much equipment needed
-Uses renewable resources (wont run out) 😛

Question 10

What are the disadvantages of producing ethanol by fermentation?

Answer 10

-Batch production not continuous so less efficient
-Impure ethanol still needs distilling