Question

What does it mean if a molecule is kinetically stable? How does this relate to the free energy change of the reaction?

Answer 1

Ans-- let us consider a molecule (A) changes to (B)

A -------> B

A molecule Kinetic stability basically occurs when the reactants react slowly. The slower the reaction occurs, the greater the kinetic stability. if we say reaction is kinetically stable, then that implies that the reaction occurs very slowly. Also kinetic stability describes the rates of reactions and how fast equilibrium is reached.

A kinetic stable molecule have higher the activation (activation energy) that means A kinetically controlled reaction is one that does not occur because of a large activation energy barrier even though the products have a lower standard Gibbs free energy (i.e., the reaction is favorable because the product or products are more stable).