Write a note on Spontaneity and free energy.
Answers
Answer:
The best indicator of spontaneity in a reaction is the change in Entropy (S or DS). The Second Law of Thermodynamics states that for a reaction to be spontaneous, there must be an increase in entropy. Entropy is often defined as a measure of the disorder of a system, this is not a very accurate definition.
Explanation:
Free energy, in thermodynamics, energy-like property or state function of a system in thermodynamic equilibrium. ... Free energy is an extensive property, meaning that its magnitude depends on the amount of a substance in a given thermodynamic state.
Answer:
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Explanation:
Using free energy to determine spontaneity
The sign of ΔG will change from positive to negative (or vice versa) where T = ΔH/ΔS. ... positive, the process is non-spontaneous as written, but it may proceed spontaneously in the reverse direction. zero, the process is at equilibrium, with no net change taking place over time.