Enthalpy Changes Flashcards
(7 cards)
Standard Conditions for enthalpy changes
100KPa
Speciefied temp (298K)
What is the standard enthalpy of formation
The enthalpy change when 1 mole of the compound is for,ed form its elements in standard states and conditions
What is the standard enthalpy of combustion
The enthalpy change when 1 mole of a substance is completely burned in oxygen under standard conditions
What is the standard enthalpy of neutralisation
The enthalpy hange when an acid and an alkali react to form 1 mole of water under standard conditions
What is bond breaking
Endothermic
What is bond making
Exothermic
Equations for enthalpy changes
q=m c deltaT
M=volume in grams
Delta T= change in temp
q= heat lost or gained in joules
DeltaH = q/n
Remember to add in positive or negative sign at the end
