Catalyst

[Dominique Zuk 1G]

I know that a catalyst speeds up a reaction, but on the molecular level how does it do this ?

[Sophia Eliopulos 2I]

Catalysts work by providing an alternative reaction pathway for the breaking and remaking of bonds. The activation energy for this new pathway is often less than the activation energy of the normal pathway. When a catalyst is present, one of the reactants reacts with the catalyst to form an intermediate product which then reacts with the other reactant to form the final product. The activation energies of both these steps is lower than the activation energy without the presence of a catalyst, therefore more molecules will have the energy to react using the catalyst ( the rate of reaction is increased ).

[804748473]

Could someone outline the information we need to know about catalysts because I could not find it in the course reader

[tasmia_amjad_3K]

Page 76 in the course reader is pretty helpful when it comes to important information about catalysts.

[704647747]

Could someone outline the information we need to know about catalysts because I could not find it in the course reader

page 84 also has a little bit of information on catalysts and free energy (activated complex theory).

[Jose_Arambulo_2I]

Furthermore, a catalyst lowers the free energy of activation by lowering the energy required to break bonds (decreases standard enthalpy of activation) and puts the reactants closer together and in their correct orientations (increases standard entropy of activation).

[Justin Yu 3H]

Furthermore, a catalyst lowers the free energy of activation by lowering the energy required to break bonds (decreases standard enthalpy of activation) and puts the reactants closer together and in their correct orientations (increases standard entropy of activation).

How does that increase the standard entropy of activation?