# Energy estimation of the hydrogenation of alkenes with metal catalysts.

By considering the binding and dissociation energies, it is possible to estimate the energy of the reaction.

Tab.1
Energy estimation
Breaking the alkene π bond 276 $kJmol-1$ 435 $kJmol-1$ -837 $kJmol-1$ 276+435-837 = -126 $kJmol-1$

This accounts for the following values:

Tab.2
Calculated heat of hydrogenation
Ethylene 136.9 $kJmol-1$ 125.6 $kJmol-1$ 115.6 $kJmol-1$ 119.7 $kJmol-1$