Alcohols

Question 1

General formula for alcohol

Answer 1

C n H2n+1 OH

Question 2

What is a alcohols react with the air to produce

Answer 2

Carbon dioxide and water

Question 3

What is the alcohol react with sodium to produce

Answer 3

Hydrogen

Question 4

Alcohol can be oxidised by reacting with oxygen to produce

Answer 4

Carboxylic acid

Question 5

Different alcohols form different carboxylic acids e.g. methanol forms

Answer 5

Methanoic acid

Question 6

What are alcohol such as methanol and ethanol used as

Answer 6

Solvent because they dissolve most things water can but they can also dissolve substances that water won’t e.g. hydrocarbons oils and fats

Question 7

What are the first four alcohol is used as

Answer 7

Fuels

Question 8

What is ethanol produced by

Answer 8

Fermentation

Question 9

How does fermentation convert sugar into ethanol

Answer 9

Yeast
Sugar —> ethanol + carbon dioxide

Question 10

When does fermentation happen the fastest

Answer 10

37°C in a slightly acidic solution and under anaerobic conditions

Question 11

What is ethanol used as a fuel for

Answer 11

Spirit burners and burns cleanly with no smell