Define free energy. 

Define energy.

In the reaction of I_(2) with water, change in free energy is

Most of animals at present obtain their free energy from

Define strain energy and derive the equa- tion for the same.

Define Gibbs energy. How is it related to enthalpy and entropy?

The standard free energy of Cu_((aq))^(+) is 50 kJ mol^(-1) and that of Cu_((aq))^(2+) is 66 kJ. mol^(-1) . Calculate the change in free energy for the reaction, Cu_((aq))^(+) to Cu_((aq))^(2+) + e^(-) .

(A): For a process to be spontaneous, the change in free energy must be negative. (R): The change in entropy for a process must always be positive if it is spontaneous.