Lesson: Calculating Entropy by Counting Microstates Chemistry • The Molecular Nature of Matter and Change • Eighth Edition • Chemistry 13e • AP EditionChemistry
In this lesson, we will learn how to use the Boltzmann equation to calculate the entropy of particles from the logarithm of the number of microstates.
Sample Question Videos
A system contains six particles distributed between two boxes.
Calculate the fractional probability of all particles occupying one of the two boxes.
The system originally contains an equal number of particles in each box. The particles are redistributed so that one box contains only one particle. Calculate to 4 significant figures the entropy change for this process.
Calculate to 4 significant figures the maximum value of when one distribution converts to another in this system.
A system contains four particles evenly distributed between two boxes. Before heat transfer, two units of energy are distributed between the particles in one box and the particles in the other box have zero energy. After heat transfer, the two units of energy are evenly distributed between the two boxes. Calculate to 4 significant figures the entropy change for this process.
Consider two systems that are identical in all respects, except that in one the molecules are distinguishable, whereas in the other the molecules are indistinguishable. What would the difference between the molar entropies of these two systems be?