4 posts • Page 1 of 1
what is the difference between the two energies and do they have the same units? Internal energy is energy in a system that can do work but doesn’t gibbs free energy do work too? what is exactly meant by “free energy”?
I'm not entirely positive about this, but I think internal energy is more of a measure of the total energy of a system (which is why it can be changed by both work and heat). However, Gibbs free energy is a measure of only the energy that is available to be used. So, for example, during a reaction, some energy might be given off as heat because reactions can't be 100% efficient. Therefore, the product of that reaction will have less energy available inside of it to do work in the next reaction.
Gibbs Free Energy is the maximum amount of non-expansion work that can be extracted from a thermodynamically closed system, a maximum that can be attained only in a completely reversible process. "Free energy" refers to energy available to do non-expansion work.
Who is online
Users browsing this forum: No registered users and 1 guest