Enthalpy

Enthalpy and Energy

• An exothermic reaction is where energy is released from chemical bonds.
• An endothermic is  where energy is taken in to form the chemical bonds.
• Enthalpy is the heat energy content of a compound at constant pressure.
• ΔH represents the Change in Enthalpy 
• An exothermic reaction will have a negative Enthalpy Change, an endothermic will have a positive Enthalpy change.
• The standard conditions for measuring Enthalpy Change are: 298K, 100kPa and the values are giver per mole.
• ΔH = H products - H reactants
• Calorimetry is the measuring of heat. 
• A catalyst doesn't affect the ΔH of a reaction.
• Heat energy required (Q) for a recation to occur is often calculated 
• Q=MCΔT: M…