2nd Law of thermodynamics | Spontaneity of a reaction | Gibbs free energy

Define Gibb’s free energy.

What is Gibb’s free energy?

Define Gibb's free energy .

Explain spontaneity of a process in terms of Gibbs energy.

What is the significance of the second law of thermodynamics in the spontaneity of exothermic and endothermic reactions?

I. Read the following passage and answer questions 1-5 that follows: Spontaneity means the feasibility of a reaction.Gibbs free energy (G) is the thermodynamic quantity which helps in predicting the spontaneity of a process G = H - TS The change in free energy is represented by Gibbs Helmoltz equation, DeltaH - DeltaH - TDeltaS For spontaneity of a process, DeltaG must be negative.It depends upon energy factor (DeltaH) and entropy factor (TDeltaS) . 1. What are the signs of DeltaH and DeltaS for the reactions : 2CI(g) to CI_(2)(g) ?