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A Microscopic View of Entropy Initial State: Assume there is only one way for four molecules to occupy a box. Final State: Now double the volume of the box isothermally (that is, with no change in internal energy): from David W. Oxtoby, H. P. Gillis, Alan Campion. Principles of Modern Chemistry,6th ed., Thomson Brooks/Cole: Belmont, CA, 2008.

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A Microscopic View of Entropy

Initial State: Assume there is only one way for four molecules to occupy a box.

Final State: Now double the volume of the box isothermally (that is, with no change in internal energy):

from David W. Oxtoby, H. P. Gillis, Alan Campion. Principles of Modern Chemistry,6th ed., Thomson Brooks/Cole: Belmont, CA, 2008.

from David W. Oxtoby, H. P. Gillis, Norman H. Nachtrieb. Principles of Modern Chemistry,4th ed., Saunders: Fort Worth, TX, 1999.