CH3

Question 1

Definition of Exothermic reaction

Answer 1

Chemical reaction that released heat energy to the surrounding

Question 2

Definition of endothermic reaction

Answer 2

Chemical reaction that absorbed heat energy from surrounding

Question 3

Definition of heat of reaction

Answer 3

Heat change of 1 mol of a reactant reacted or products formed

Question 4

Definition of heat of combustion

Answer 4

Heat energy released when 1 mol of a substance is burnt completely in excess oxygen

Question 5

Definition of fuel value

Answer 5

Amount of heat energy released when 1 g of a substance is burnt completely in excess oxygen

Question 6

Definition of heat of precipitation

Answer 6

Heat change when 1 mol of precipitate is formed from their ions in an aqeuous solution

Question 7

Definition of heat of displacement

Answer 7

Heat change when 1 mol of metal is displaced from its salt solution by a more electropositive metal

Question 8

Definition of heat of neutralisation

Answer 8

Heat change when 1 mol of water is produced during reaction between acid and alkali