C3 - Alcohols

Question 1

What is the functional group for alcohols?

Answer 1

OH.

Question 2

What is the formula for methanol?

Answer 2

C H3 OH.

Question 3

What is the formula for ethanol?

Answer 3

C2 H5 OH.

Question 4

What is the formula for propanol?

Answer 4

C3 H7 OH.

Question 5

What type of series are the alcohols, what does this mean and why?

Answer 5

They are a homologous series.

This means they react in the same way as they have the same functional group.

Question 6

What do alcohols do in air?

Answer 6

They burn to produce CO2 + water.

Question 7

What do alcohols do in water?

Answer 7

They dissolve to form a neutral solution.

Question 8

What happens when you react alcohols with sodium?

Answer 8

An alkoxide & hydrogen are produced.

Question 9

What is the consumable use for ethanol?

Answer 9

Alcoholic drinks.

Question 10

Why is ethanol used in alcoholic drinks?

Answer 10

It is not as toxic as methanol.

Question 11

What happens if a person consumes methanol?

Answer 11

It causes blindness.

Question 12

What damage does ethanol consumption do?

Answer 12

Damages the liver & brain.

Question 13

Why is ethanol a good solvent?

Answer 13

It can dissolve substances that water can’t.

Question 14

What happens if you mix ethanol with water & oil?

Answer 14

Perfume is produced.

Question 15

What is methylated spirit?

Answer 15

Ethanol with added chemicals.

Question 16

What are the uses of methylated spirit? [2]

Answer 16

Cleaning brushes.

Fuel.

Question 17

What is added to methylated spirit and why?

Answer 17

Purple-blue dye is added as a warning because it is poisonous.

Question 18

Why is ethanol burned?

Answer 18

It is a clean burner.

Question 19

What are the uses of burning ethanol? [3]

Answer 19

Spirit burners.

Car fuel: less pollution.

Question 20

How can you produce ethanol?

Answer 20

By fermenting sugar cane.

Question 21

What is the general formula for alcohols?

Answer 21

Cn H2n+1 OH.