Standard Enthalpy changes definitions

Question 1

Standard Conditions

Answer 1

100kPa
298 K
1 mol/dm^3
Standard state

Question 2

Enthalpy Change of Formation

Answer 2

Enthalpy change that takes place when 1 mole of a compound is formed from its elements under standard conditions
With all reactants and products in their standard states

Question 3

Enthalpy Change of Combustion

Answer 3

Enthalpy change that takes place when when one mole of a substance reacts completely with oxygen under standard conditions
With all reactants and products in their standard states

Question 4

Enthalpy Change of neutralisation

Answer 4

Enthalpy change that accompanied 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