Standard enthalpy changes

• What is the standard temp

  298K / 25 degrees celsius
• what is the standard pressure

  100kPa
• what is the standard concentration

  1 mol dm-3
• What is the definition of the standard enthalpy of combustion

  Standard enthalpy change when one mole of a substance reacts completely with o2 under standard conditions and all chemicals in their standard states
• what is the standard enthalpy change of neutralisation

  standard enthalpy change when 1 mol of h2o is formed in a neutralisation reaction under standard conditions
• what is the value of the standard enthalpy change of neutralisation 


  -57kJ mol-1
• What is the standard enthalpy change of formation

  standard enthalpy change when 1 mol of a compound is formed from its elements under standard conditions and all chemicals are in their standard states
• What is the standard enthalpy change of reaction

  Standard enthalpy change when a reaction takes place un the molar quantities shown by the chemical equation under standard conditions and in their standard states
• what type of reaction is the standard enthalpy change of reaction used for

  a reaction that isnt combustion, neutralisation of formation