Question

Explain the following
(a) Gibbs free energy
(b) Spontaneity​

Answer 1

Answer:

a. When a process occurs at constant temperature \text TTstart text, T, end text and pressure \text PPstart text, P, end text, we can rearrange the second law of thermodynamics and define a new quantity known as Gibbs free energy:

G=H−TS

b. a spontaneous processes is one that occurs without the addition of external energy. A spontaneous process may take place quickly or slowly, because spontaneity is not related to kinetics or reaction rate. A classic example is the process of carbon in the form of a diamond turning into graphite.

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Explanation:

Answer 2

Gibbs free energy:
a thermodynamic quantity equal to the enthalpy (of a system or process) minus the product of the entropy and the absolute temperature.
Spontaneity:
the condition of being spontaneous; spontaneous behaviour or action

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