b. Write reference to your diagram in part a. and using concept of bond energies, explain why some reactions are overall exothermic process.

21/le/dropbox/297208/157859/DownloadAttachment?fid=15730887 D Page view A Read aloud Add text V Draw Unit 1 Assignment 5. a. Sketch a potential energy diagram for a GENERAL chemical reaction that has the following components: The reaction is exothermic. The reaction has a relatively small activation barrier. The net enthalpy change of the reaction is 85 kJ. Label the . o energy of the reactants and products activation energy for the reverse reaction site of the activated complex . Add a dotted (or different coloured) line to show how the addition of a catalyst would affect the chemical reaction described. (7 marks)