Organic chemistry

Question 1

Fill in the gap:

A homologous series is a ____ of ________ compounds

Answer 1

1. Group

2. Similar

Question 2

What functional group do alcohols have?

Answer 2

‘OH’

Question 3

What functional groups do Carboxylic acids have

Answer 3

‘COOH’

Question 4

What is the general formula for alkanes?

Answer 4

CnH2n+2

Question 5

What is the general formula for alkenes?

Answer 5

CnH2n

Question 6

What is the general formula for an alcohol?

Answer 6

CnH2n+1 OH

Question 7

What is the general formula a Carboxylic acid?

Answer 7

CnH2n+1COOH

Question 8

What an ethanol be made from?

Answer 8

Fermentation

Question 9

What does fractional distillation do to ethanol

Answer 9

Makes it concentrated

Question 10

Fill in the gap:

Ethene can be reacted with ____ to produce ________

Answer 10

1. Steam

2. Ethanol

Question 11

What type of reaction is this called?

Answer 11

1. Hydration reaction.

Question 12

Fill in the gap:

Ethanol can be ____________ to Ethene

Answer 12

1. Dehydrated

Question 13

What is Ethanoic acid?

Answer 13

1. A vinegar

Question 14

What functional group do esters have?

Answer 14

‘COO’

Question 15

Identify and explain one use of esters and why they are used for that purpose?

Answer 15

1. Esters have nice smells, this is why they are used in perfumes

Question 16

Name two uses of polyesters

Answer 16

1. Fabrics

2. Plastics

Question 17

What are soaps made from?

Answer 17

Ester+alkali

Question 18

What two types of parts to soap anions have?

Answer 18

1. Hydrophilic

2. Hydrophobic

Question 19

The hydrophobic end is attracted to ___

Answer 19

1. Oil

Question 20

The hydrophilic end is _______ in water

Answer 20

1. Soluble

Question 21

What happens to vegetable oils so that they can be used in the food industry?

Answer 21

1. They are hydrogenated