Entropy and enthelpy difference

In summary, entropy is a measure of the number of possible microscopic states that a system can take on, with the most likely state being the one with the highest entropy. It is related to the second law of thermodynamics, which states that entropy tends to increase in a closed system. The concept of disorder and energy dispersal are often used to explain entropy, but they can be flawed and subjective. It is best to think of entropy in terms of microstates and how they change in a system as it undergoes processes such as heating, cooling, and work.
  • #36
In my opinion after many years of observing many opinions, Entropy is the "state" or condition of relative order of the entire process contained within the envelope of the closed system and with an irreversible process; with perfect order being 0% Entropy, and total disorder being 100% Entropy. Since it is in a closed system, and irreversible, any process will proceed toward the completion of balancing of its forces, energies, pressures, etc. until no further action is possible. Theory says 100%, but real world things never achieve that.

In thermodynamics, the 100% Entropy would be the total and uniform distribution of all the heat elements contained within the envelope, with no more ability to perform work. Anything less than 100% would imply higher areas of concentration of heat, and therefore the ability to perform work.

The key words a "closed system" and "irreversible".
Bob.
 
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  • #37
What is the relationship of enthalpy and entropy?
 
  • #38
Enthalpy is a measure of energy. Entropy is direction. When energy decreases, entropy increases. According to Brian Greene (The Fabric of the Cosmos), the entropy of the universe has been increasing since the "Big Bang."
 
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  • #39
How is energy defined as "unavailable"
 

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