Alcohols, Carboxylic acids, Esters, Polymers - Chemistry

Question 1

What functional group do alcohols contain?

Answer 1

−OH

Question 2

What is the structural formula for methanol.

Answer 2

CH3OH

Question 3

What is the chemical formula for ethanol?

Answer 3

C2H5OH

Question 4

Name the alcohol with the structural formula CH3CH2CH2OH.

Answer 4

Propan-1-ol or Propanol

Question 5

What is the main product of the oxidation of ethanol?

Answer 5

Ethanoic acid

Question 6

What is formed when ethanol reacts with oxygen in air?

Answer 6

Ethanoic acid

Question 7

What is required to oxidise ethanol using potassium dichromate(VI)?

Answer 7

Dilute sulfuric acid

Question 8

How can ethanol be manufactured from ethene?

Answer 8

Reacting ethene with steam in the presence of a phosphoric acid catalyst at about 300 ºC and 60–70 atm

Question 9

What is the fermentation process for producing ethanol?

Answer 9

Fermentation of glucose in the absence of air at about 30 ºC using yeast enzymes

Question 10

What is the functional group of carboxylic acid?

Answer 10

−COOH

Question 11

How many carbon atoms can unbranched-chain carboxylic acids have for drawing structural formulae?

Answer 11

Up to four carbon atoms

Question 12

What reactions do aqueous solutions of carboxylic acids undergo?

Answer 12

Reactions with metals and metal carbonates

Question 13

What is vinegar an aqueous solution of?

Answer 13

Ethanoic acid

Question 14

What functional group do esters contain?

Answer 14

Functional group −COO−

Question 15

What ester is produced when ethanol and ethanoic acid react?

Answer 15

Ethyl ethanoate

Question 16

Write the structural formula for ethyl ethanoate.

Answer 16

CH3COOCH2CH3

Question 17

What are esters used for?

Answer 17

Food flavourings and perfumes

Question 18

What is formed during the condensation polymerisation of a dicarboxylic acid and a diol?

Answer 18

A polyester and water

Question 19

What is an addition polymer formed from?

Answer 19

Joining many small molecules called monomers

Question 20

What is a problem associated with the disposal of addition polymers?

Answer 20

Inertness and inability to biodegrade, production of toxic gases when burned

Question 21

What are biopolyesters?

Answer 21

Some polyesters that are biodegradable

Question 22

How to deduce the structure of a monomer from a repeat unit of an addition polymer?

Answer 22

Reverse engineering from the repeat unit

Question 23

Fill in the blank: An addition polymer is formed by joining up many small molecules called _______.

Answer 23

[monomers]