Hello,(adsbygoogle = window.adsbygoogle || []).push({});

I've been recently learning thermodynamics and have some questions about entropy. First off, I understand that it is a statistical measure of disorder and uncertainty and understand the 2nd and 3rd laws fairly well.

My question pertains more to Gibb's Free Energy. As I've learned it, there is only a certain amount of usable energy that can be done as non-expansion work that is equal to enthalpy - temperature*entropy. Thus, I am querying if there is something more to entropy than statistic. Does a system that has increased in entropy increased in energy, and some type of energy that is bound to entropy only? Is the disorder increase related to this unusable energy? I guess I'm wondering if entropy is somehow physical rather than just mathematical.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Understanding Entropy better

**Physics Forums | Science Articles, Homework Help, Discussion**