{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

10.2SecondLawofThermodynamics

10.2SecondLawofThermodynamics - Reversible/Irreversible...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Second Law of Thermodynamics 10.2 Entropy Quality of Heat Order / Disorder Reversible /Irreversible processes Ball drop Mechanical Energy Heat energy Irreversible process Irreversible process -proceeds spontaneously -associated with increasing disorder The reversal of an irreversible process is improbable ( even though it may be possible according to the First Law of Thermodynamics) Entropy Heat Entropy is a state function that governs the availability of heat to do work. Disorder/Order The entropy of the system is a measure of the disorder of the system. The entropy increases for irreversible (spontaneous) processes. The entropy of the universe is increasing leading to greater disorder. Irreversible Heat Flow Heat flow from high T to low T is irreversible Q The initial (a) and final (b) states have the same energy but have different ability to do work Quality of Heat Heat flows from high temperature to low temperature. High temperature sources of heat can be converted to work with higher efficiency. High temperature is a measure of the quality of the heat. T h T c Q Irreversible free expansion of a gas The gas is allowed to expand into a vacuum, in an insulated container from a to b without doing work or taking up heat. .
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    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.

    Student Picture

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

  • Left Quote Icon

    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.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    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.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern