18.1. Rates of Reactions http://www.ck12.org
FIGURE 18.7
ments for breaking the H-H bond are offset somewhat if each hydrogen atom can form a new bond with the metal
surface. Then, collisions between the alkene and the metal-hydrogen complex result in the formation of a product.
The metal surface is regenerated after the hydrogen atoms are removed, so it is not used up by the reaction, but it
increases the rate by stabilizing the high energy hydrogen atoms.