Enthalpy Change

Question 1

Standard Ethalpy Change of Reaction

Answer 1

The enthalpy change when amounts of reactants in the equation give products (in their standard states) under standard conditions

Question 2

Standard Enthalpy Change of Formation

Answer 2

Enthalpy Change when 1 mole of a compound is formed from its elements under standard conditions

Question 3

Standard Enthalpy of Combustion

Answer 3

Enthalpy change when 1 mole of a substance is burnt in excess oxygen under standard conditions

Question 4

Standard Enthalpy Change of Neutralisation

Answer 4

Enthalpy change when 1 mole of water is formed by acid +alkali under standard conditions

Question 5

Standard Enthalpy Change of Solution

Answer 5

Enthalpy change when 1 mole of solute is dissolved in solvent to form an infinitely dilute solution under standard conditions

Question 6

Standard Enthalpy Change of Anhydrous Salt

Answer 6

enthalpy change when 1 mol of hydrated salt is formed from one mol of anhydrous salt under standard conditions