{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Basic Thermodynamics 2.2

# Basic Thermodynamics 2.2 - Summary on Entropy Entropy is a...

This preview shows pages 1–3. Sign up to view the full content.

MSE 3050, Phase Diagrams and Kinetics, Leonid Zhigilei Summary on Entropy ¾ Entropy is a state function. ¾ When the weight-heat reservoir system, discussed above, undergoes a spontaneous process which causes the adsorption of heat q at a constant temperature T, the entropy produced by the system Δ S = q/T. The increase in entropy, caused by the process, is thus a measure of the degree of irreversibility. ¾ The increase in entropy due to the occurrence of an irreversible process arises from the degradation of energy potentially available for useful work into heat. ¾ In a reversible process (the driving force is infinitesimal and the process proceeds at an infinitesimal rate) the system moves through a continuum of equilibrium states and the entropy is not created, can only be transferred from one part of the system to another. For more on entropy in reversible processes see Gaskell, §3.4 – 3.9. ¾ The entropy of an adiabatic system cannot decrease. It increases in an irreversible process and remains constant during a reversible process.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
MSE 3050, Phase Diagrams and Kinetics, Leonid Zhigilei The Second Law Again We can reformulate the second law in the following way: For every thermodynamic system
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern