This equation we spoke about when we spoke about temperature and reaction rate. So K, our reaction constant is equal to z times p. Now, z and p are the scarcity factor and the frequency of collisions. Now, this guy e is what our catalyst affects. Now, catalysts speed up reactions by lowering the activation energy needed to convert the reactants to products. Now, this in turn increases the number of molecules that have enough kinetic energy to climb that activation barrier. In other words, it decreases this activation energy EA, thereby increasing this e component.