Organic chemistry - Alcohols & Carboxylic Acids and Macromolecules Flashcards Preview

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Flashcards in Organic chemistry - Alcohols & Carboxylic Acids and Macromolecules Deck (30):
1

Name the alcohol with 1 carbon atom.

methanol

2

State the structural formula of propanol.

CH3CH2CH2OH (reject any molecular formula e.g. C3H8O)

3

Are alcohols soluble in water?

yes

4

Are alcohols alkalis?

no [the OH group is not basic; alcohols are neutral]

5

In the presence of an oxidising agent, what is ethanol oxidised to?

ethanoic acid

6

State two methods to produce ethanol.

hydration of ethene and fermentation of carbohydrates

7

What are the conditions to manufacture ethanol from ethene?

300 degree Celsius, 60 atm, phosphoric acid catalyst

8

What are the conditions to manufacture ethanol from the fermentation of carbohydrates?

37 degree Celsius, absence of oxygen (anaerobic)

9

What gas is produced as a result of fermentation of carbohydrates?

carbon dioxide

10

State two uses of ethanol.

alcoholic drinks OR
solvent OR
fuel

(any 2)

11

What is the structural formula for ethanoic acid?

CH3COOH (reject molecular formula C2H4O2)

12

What carboxylic acid is present in vinegar?

ethanoic acid

13

What are the products formed when ethanoic acid reacts with zinc?

zinc ethanoate and hydrogen

*salts of ethanoic acid are ethanoates

14

What are the products formed when ethanoic acid reacts with sodium carbonate?

sodium ethanoate, carbon dioxide and water

15

What organic compound is formed when an alcohol reacts with a carboxylic acid?

ester

16

What is the name of the ester formed when ethanol reacts with ethanoic acid?

ethyl ethanoate

17

What is the name of the ester formed when methanol reacts with propanoic acid?

methyl propanoate

*first part of name refers to alcohol used, second part of name refers to carboxylic acid used

18

What alcohol and carboxylic acid is used to make propyl methanoate?

alcohol - propanol
carboxylic acid - methanoic acid

19

What is the catalyst used during esterifcation between an alcohol and carboxylic acid?

concentrated sulfuric acid (reject if concentrated is not stated)

20

State a use of esters.

solvents OR
cosmetics OR
artificial food flavourings OR
perfumes

(any 1 or any other valid answer)

21

State an example of a natural polymer.

proteins OR
starch OR
fats

(any 1 or any other valid answer)

22

State an example of a synthetic polymer.

poly(ethene) OR
nylon OR
terylene OR
Polyvinyl chloride

(any 1 or any other valid answer)

23

What is 'addition polymerisation'?

process of forming a polymer when monomer units join together without losing any molecules or atoms

24

What is 'condensation polymerisation'?

process of forming a polymer when monomer units join together and a small molecule (e.g. HCl or H2O) is produced

25

Name a condensation polymer.

nylon OR
terylene

(any 1 or any other valid answer)

26

Name an addition polymer.

poly(ethene)

(or any other valid answer)

27

What is the monomer used to make poly(propene)?

propene

28

What linkage is present in terylene?

ester linkage

29

What are the monomers used to make nylon?

diamine and dicarboxylic acid

30

What is meant by the term 'non-biodegradable'?

cannot be decomposed by bacteria in the soil