Activation energy =
minimum energy
req. to break bonds
& initiate reaction
Standard
conditions =
100 degrees 1
atmosphere
DeltaH of reaction =
the enthalpy change
when the products
as specified in an
equation react
together under
standard conditions
DeltaH of formation =
The enthalpy change
that occurs when one
mole of a compound is
formed from it's
constituent elements in
their standard states
under standard
conditions
DeltaH of
Combustion =
the enthalpy
change when
one mole of a
substance
reacts
completely with
1 mole of
oxygen under
standard
conditions
Average Bond Enthalpy = average
enthalpy change that takes place
when breaking by homiletic fission,
1 mole of a given type of bond in
the molecules of a gaseous species
Hess's Law = states that if there
is more than one route for a
reaction and the initial and final
conditions are the same then the
total enthalpy change for each
route is the same