Hexane is a saturated hydrocarbon that exists in liquid form. It burns in air to give CO2 and water
C6H6 (l) + 15/2 O2 → 6 CO2 + 3H2O (l)
The potential energy diagram for this reaction is:
The activation energy for the forward reaction is
a) –25 kJ
b) 25 kJ
c) 40 kJ
d) –65 kJ
e) –80 kJ
The activation energy for the forward reaction can be determined by looking at the potential energy diagram. In the diagram, the activation energy is the difference in energy between the reactants (C6H6 and O2) and the highest point on the graph, which represents the transition state.
Since the potential energy diagram is not provided, it is not possible to determine the activation energy for the forward reaction.