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Entropy, Free Energy, Equilibrium

1. Define entropy and relate to probability of microstate formation.

2. Relate entropy and reaction spontaneity, Gibbs free energy and reaction spontaneity, and Gibbs free energy and the equilibrium constant of a reaction.

3. Calculate the entropy change within a system and determine absolute entropies.

4. In your own words, define entropy. Provide one everday example resulting in an increase in entropy, and another resulting in a decrease.

Solution Preview

1. The entropy of any system, S, is defined as:

S = k*ln(Pmax)

where Pmax is the number of microstates corresponding to the most probable distribution of the system and k is the Boltzmann constant (1.3803 × 10-16 ergs per degree C)

2. The Second Law of Thermodynamics: The entropy of the universe increases for any spontaneous reaction. Applied to a chemical system this means that the entropy of a system can increase or decrease but if it does decrease, then the ...

Solution Summary

This solution provides calculations for various calculations for questions regarding entropy.