Alcohols

Question 1

What functional group do alcohols have

Answer 1

-O-H

Question 2

What is the general formula of alcohols

Answer 2

CnH2n+1OH

Question 3

What are the first 4 alcohols

Answer 3

-the first 4 in the homologous series
-methanol
-ethanol
-propanol
-butanol

Question 4

First 4 alcohols displayed formulas

Answer 4

Methanol: CH3OH
Ethanol: C2H5OH
Propanol: C3H7OH
Butanol:C4H9OH

Question 5

Are alcohols flammable

Answer 5

Yes

Question 6

What do alcohols do in air

Answer 6

Undergo complete combustion to form carbon dioxide and water

Question 7

Equation for alcohols complete combustion with air

Answer 7

Alcohol + oxygen -> carbon dioxide + water

Question 8

Are the first 4 alcohols soluble in water

Answer 8

Yes

Question 9

What pH do the first 4 alcohols solutions have

Answer 9

A neutral pH

Question 10

What forms when alcohols are oxidised

Answer 10

Carboxylic acids

Question 11

What are alcohols like methanol and ethanol used for and why

Answer 11

Solvents in industry, because they can dissolve things water can and can’t dissolve

Question 12

What are the first 4 alcohols used as

Answer 12

Fuels

Question 13

How is ethanol usually made

Answer 13

Fermentation

Question 14

How does fermentation work

Answer 14

-uses an enzyme called yeast to convert sugars into ethanol

Question 15

Equation for fermentation

Answer 15

Sugar -> ethanol + carbon dioxide

Question 16

What temperature, pH and conditions does fermentation happen best at

Answer 16

-37oc
-slightly acidic
-anaerobic conditions