Asked by: Olarizu Egitto
science physics

How is the second law of thermodynamics related to entropy?

Last Updated: 11th June, 2020

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The Second Law of Thermodynamics states that thestate of entropy of the entire universe, as an isolatedsystem, will always increase over time. The second law alsostates that the changes in the entropy in the universe cannever be negative.

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Herein, what does the 2nd law of thermodynamics state?

The First Law of Thermodynamics states thatenergy cannot be created or destroyed; the total quantity of energyin the universe stays the same. The Second Law ofThermodynamics is about the quality of energy. It statesthat as energy is transferred or transformed, more and more of itis wasted.

Similarly, why is the 2nd Law of Thermodynamics important? Second law of thermodynamics is veryimportant because it talks about entropy and as we havediscussed, 'entropy dictates whether or not a process or a reactionis going to be spontaneous'.

Simply so, what is the 2nd Law of Thermodynamics and give an example?

The second law states that there exists a usefulstate variable called entropy S. The change in entropy delta S isequal to the heat transfer delta Q divided by the temperature T. Anexample of a reversible process is ideally forcing a flowthrough a constricted pipe. Ideal means no boundary layerlosses.

What increases the entropy of a system?

Affecting Entropy Several factors affect the amount of entropy ina system. If you increase temperature, youincrease entropy. (1) More energy put into a systemexcites the molecules and the amount of random activity. (2) As agas expands in a system, entropyincreases.

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