C10

Question 1

combustion of the alkenes

Answer 1

Complete combustion of an alkene forms carbon dioxide and water.

Question 2

Reaction with hydrogen

Answer 2

The alkenes are unsaturated compounds, their molecules do not contain the maximum number of hydrogen atoms possible in a hydrocarbon molecule, but the addition of a hydrogen molecule across the double bond will form a saturated hydrocarbon.

Question 3

Alcohol uses

Answer 3

They are used as solvents and fuels, and ethanol is the main alcohol in alcoholic drinks.

Question 4

Combustion with alcohol

Answer 4

Alcohols burn in air, forming carbon dioxide and water.

Question 5

Alcohol with sodium

Answer 5

Alcohol reacts with sodium metal to form a solution of sodium alkoxide and hydrogen gas is given off.

Question 6

Oxidation of alcohol

Answer 6

Ethanol can be oxidised to ethanoic acid, by chemical oxidising agents or microbes in the air. Ethanoic acid is the main acid in vinegar.