CH.6 Enthalpy changes

Question 1

Standard enthalpy change of reaction

Answer 1

the enthalpy change when the amounts of reactants shown in the stoichiometric equation react to give products under standard conditions

Question 2

Standard enthalpy change of formation

Answer 2

the enthalpy change when one mole of a compound is formed from its elements under standard conditions

Question 3

Standard enthalpy change of combustion

Answer 3

the enthalpy change when one mole of a substance is burnt in excess oxygen under standard conditions

Question 4

Standard enthalpy change of neutralization

Answer 4

the enthalpy change when on mole of water is formed by the reaction of an acid with an alkali under standard conditions

Question 5

Standard enthalpy change of atomization

Answer 5

the enthalpy change when one mole of gaseous atoms is formed from its element under standard conditions