Standard Gibbs Free Energy of Activation

[Rachel Kipp 1I]

Why is standard Gibbs free energy of activation always a positive value, in terms of conceptual understanding?

[Justin_Yi_1J]

In order to bring reactants together to undergo a chemical reaction, energy must be put into the system to do the work necessary to perform the reaction. Gibbs free energy is a measure of the energy in a system that is available to do work. A system must gain energy to do the work of the reaction, so the Gibbs free energy of activation must be positive.

[Narin Maisha 2H]

It is always a positive value because a reaction will only be allowed when the total entropy change of the universe is 0 or another positive integer.

[Hudson2J]

In order to convert reactants into products, both molecules must collide and enter an activated transition state. This must always be higher energy because additional energy is required to break bonds in the complex, which is necessary to convert reactant to product.

[705748759]

It is always a positive value!!!