The reaction shown by the second diagram is more exothermic. There is a greater difference in energy between the reactants and products. The green arrow is longer.

Reaction pathway diagrams display information about the energy changes during chemical reactions. Chemical energy Energy changes occur in chemical reactions as bonds are broken and new bonds formed.

This diagram illustrates a proposed conceptual framework for ... areas and unique electronic properties can serve as highly efficient catalysts for chemical reactions. Nanochemists design and ...