C10 - Organic Reactions

Question 1

list:

prefixes for number of carbons in a molecule

1 to 5

Answer 1

1. eth-
2. meth-
3. prop-
4. but-
5. pent-

Question 2

list suffixes:

1. alkanes
2. alkenes
3. alcohols
4. carboxylic acids

Answer 2

1. -ane
2. -ene
3. -ol
4. -oic acid

Question 3

list functional groups:

1. alkanes
2. alkenes
3. alcohols
4. carboxylic acids

Answer 3

C–C

C=C

–OH

–COOH
image

Question 4

list general formula

1. alkanes
2. alkenes

Answer 4

1. C_n H_2n+2
2. C_n H_2n

Question 5

define:

homologous series

in organic chemistry

Answer 5

a group of organic compounds that have the same general formula and share similar properties

Question 6

name one ester

Answer 6

ethyl ethanoate

Question 7

reactants used to make an ester

Answer 7

alcohol + carboxylic acid

Question 8

structural formula

1. ethene
2. ethanol
3. propanoic acid

Answer 8

1. CH₂CH₂
2. CH₃CH₂OH
3. CH₃CH₂COOH

Question 9

list 2

properties of alcohol

Answer 9

• soluable in water
• neutral pH

Question 10

word equation

combustion of alcohol

Answer 10

alcohol + oxygen → carbon dioxide + water

Question 11

describe

reaction of alcohol with sodium

Answer 11

Acts very similarly to water and sodium, sodium will effervesce. However it is less vigorus.

Question 12

list:

2 uses of ethanol

Answer 12

• alcohol production (the drug)
• biofuel via fermentation

Question 13

word equation

producing ethyl ethanoate

Answer 13

ethanoic acid + ethanol → ethyl ethanoate + water

Question 14

Are carboxylic acids weak or strong? Why?

Answer 14

weak, as they do not ionise completely