Measuring Enthalpy Changes

HideShow resource information
  • Created by: Jasmin
  • Created on: 02-01-14 11:21
View mindmap
  • Measuring Enthalpy Changes
    • Standard conditions
      • 1 atm pressure at 298K (25 degrees C)
    • Stndard enthalpy change symbol:
      • expressed per mole of substance reacting and units are kJmol-1
    • Standard Enthalpy change of reaction
      • Enthalpy change under standard conditions
      • For a reaction in the molar quantities written in the chemical equation
    • Standard enthalpy change of formation
      • Enthalpy change when 1 mole of the compound is formed from its elements under standard conditions
        • Standard enthalpy change of formation of any element, in its standard state is therefore 0. E.g. [Cl2 (g)] = 0
    • Standard enthalpy change of combustion
      • Enthalpy change when 1 mole of the substance is completely burnt in oxygen under standard conditions
    • Standard enthalpy change of atomization
      • Enthalpy change when 1 mole of an element under standard conditions is converted to gaseous atoms
        • E.g. 1/2Cl(g)--> Cl(g)
    • Standard Enthalpy change of neutralisation
      • Enthalpy change when 1 mole of water is formed by reaction of an acid with an alkali under standard conditions

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all Enthalpy resources »