Enthalpy Changes Flashcards
Define the term ‘activation energy’
The minimum amount of energy required for a reaction to occur
Define the term ‘bond enthalpy’
The enthalpy change that takes place when 1 mole of a specified bond is broken into its atoms in the gas phase
Define the term ‘endothermic’
A reaction in which the enthalpy of the products is greater than the enthalpy of the reactants (^H is positive)
Define the term ‘enthalpy (H)’
The heat content of a chemical measured at constant pressure
Define the term ‘exothermic’
A reaction in which the enthalpy of the products is smaller than the enthalpy of the reactants (^H is negative)
Define the term ‘enthalpy (H)’
The heat content of a chemical measured at constant pressure
Define the term ‘exothermic’
A reaction in which the enthalpy of the products is smaller than the enthalpy of the reactants (^H is negative)
Define the term ‘Hess’ Law’
The enthalpy change of a reaction is independent of the route, it only depends on the initial and final stages
