Question

Roll of standred free energy change in spontinious reaction

Answer 1

standards free energy change is negative in irreversible spontaneous process

Answer 2

In a spontaneous change, Gibbs energy always decreases and never increases. An important consequence of the one-way downward path of the free energy is that once it reaches its minimum possible value, all net change comes to a halt. This, of course, represents the state of chemical equilibrium.