Enthalpy

[Lui 1G]

How does deltaH relate to catalysis?

[806196308]

Catalysis offers a separate pathway for the reaction and lowers the activation energy for the reaction, having little to no affect on the ∆H overall.

[Lilia Hacoupian 2E]

Catalysis relies heavily on enthalpy change, which affects equilibrium dynamics and reaction kinetics. By offering a different pathway, catalysis lowers a reaction's activation energy while allowing for faster reactions without affecting the change in H. Additionally, by altering the rates of forward and reverse reactions, catalysis has the power to change the equilibrium position. Although catalysis does not directly affect the change in H, it can affect other thermodynamic parameters such as the Gibbs free energy change.

[406003397]

The change in Delta H is related to catalysis in that a catalyst lowers the activation energy of a reaction without altering the overall Delta H for the reaction. This means that while the catalyst makes a reaction more energetically accessible by providing an alternative pathway with lower activation energy, it does not change the initial and final energy states of the reactants and products.