Energy Parameters
Calculated Values
Reactant Energy
200 kJ
Product Energy
100 kJ
ΞH (enthalpy change)
β100 kJ
Activation Energy
80 kJ
Ea with catalyst
β kJ
Reaction Type
Exothermic
Key Concepts
Exothermic (ΞH < 0):
Products have less energy than reactants. Energy is released to surroundings β temperature increases.
Activation Energy (Ea):
Minimum energy needed for reactant particles to collide successfully and start the reaction.
Catalyst:
Provides an alternative reaction pathway with lower Ea. Does NOT change ΞH β same reactants and products.