Enthalpy

Question 1

Standard enthalpy change of reaction

Answer 1

Is the enthalpy change that accompanies a reaction in the molar quantities under standard condition , with all reactants and products in their standard state

Question 2

Standard enthalpy change of formation

Answer 2

Is the enthalpy change that takes place when one mole of a compound is formed from its elements under standard condition , with all reactants and products in their standard states .

Question 3

Standard enthalpy change of combustion

Answer 3

Is the enthalpy change that takes place when one mole of a substance reacts completely with with oxygen under standard conditions , with all reactants and products in their standard states.

Question 4

Enthalpy change of neutralisation

Answer 4

Is the enthalpy change that accompanies the reaction of an acid by a base to form one mole of H20 under standard conditions , with all reactants and products in their standard states

Question 5

Exothermic reaction

Answer 5

Heat is released from it’s surroundings

Question 6

Endothermic reaction

Answer 6

Energy is taken in from its surroundings