Chemistry Topic 7//Alcohols//Carboxylic acids//Condensation polymers//Naturally Occurring polymers

Question 1

What is the functional group of alcohols

Answer 1

OH

Question 2

What are the 4 alcohols and formula

Answer 2

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

Question 3

What is the general formula for alcohols

Answer 3

CnH2n+1OH

Question 4

What are 5 similar properties of the 4 alcohols

Answer 4

1. Flammable as they undergo complete combustion in air to form CO2 and H2O
2. All soluble in water
3. Alcohols can be oxidised by reacting with oxygen to produce carboxylic acid
4. They react with sodium
5. Different alcohols form different carboxylic acids

Question 5

What are Alcohols used as solvents in industry

Answer 5

Alcohols such a methanol and ethanol are used as solvents because they can dissolve most things water can and cannot dissolve

Question 6

What is ethanol

Answer 6

Ethanol is the alcohol found in alcoholic drinks made by Fermentation

Question 7

What does Fermentation do

Answer 7

Uses an enzyme in yeast to convert sugars into ethanol and excess carbon dioxide

Question 8

When does fermentation happen fastest

Answer 8

Temp around 37 degrees in slightly acidic condition under anaerobic condition

Question 9

What is the Functional gorup of Carboxylic acid

Answer 9

COOH

Question 10

What is the 4 Carboxylic acid and their formula

Answer 10

Methanoic acid- HCOOH
Ethanoic acid- CH3COOH
Propanoic acid- C2H5COOH
Butanoic acid- C3H7COOH`

Question 11

What will form when Carboxylic acid reacts with a carbonate

Answer 11

forms salt, water and carbon dioxide

Question 12

What will form when Ethanoic acid reacts with sodium carbonate

Answer 12

forms sodium ethanoate, water and carbon dioxide