Entropy
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Entropy is a measure of disorder or randomness in a system. The entropy of a perfect crystal at absolute zero is zero, while the entropy of the universe must always be greater than zero. Entropy is related to the number of arrangements of particles and helps determine the direction of spontaneous processes. The entropy of an ideal gas can be calculated using Boltzmann's equation and entropy always increases or stays the same for an isolated system and its surroundings according to the second law of thermodynamics. Entropy balance equations track the transfer and generation of entropy in a system.
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2. Key points covered include the constant pressure process that water undergoes when heated from liquid to vapor, involving processes like boiling and vaporization. Phase change occurs at the saturation temperature for a given pressure.
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Geoffrey Moore is an author, speaker and advisor as well as a venture partner at Mohr Davidow Ventures (MDV). Recognized as a leading business advisor, Geoffrey divides his time between consulting on strategy and transformation challenges with senior executives and on developing mental models to support his advisory practice. With this intent in mind he has written his newest book published by HarperCollins in September of 2011: Escape Velocity: Free Your Company’s Future from the Pull of the Past, the result of his years of experience working with large enterprises in his former role as a Managing Director at TCG Advisors. Recognized as well for his expertise in market development and business and investment strategies, as a Venture Partner at Mohr Davidow Ventures he also serves as an advisor to MDV portfolio companies by drawing upon best practices derived from his extensive experience working with technology startups over the last two decades.
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He is a founder of both The Chasm Group and TCG Advisors. Earlier in his career, he was a principal and partner at Regis McKenna, Inc., a leading high tech marketing strategy and communications company, and for the decade prior, a sales and marketing executive in the software industry. He holds a bachelor's degree in literature from Stanford University and a doctorate in literature from the University of Washington.
To find out more about Geoffrey Moore please visit:
More information about Geoffrey Moore:
http://www.geoffreyamoore.com
More information about the Escape Velocity Book:
http://www.escapevelocitybymoore.com
Geoffrey Moore on Twitter:
http://www.twitter.com/geoffreyamoore
Geoffrey Moore on Google Plus:
http://gplus.to/geoffreyamoore
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This document provides information about a chemistry course titled CY 11001 CHEMISTRY. It includes:
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[END SUMMARY]
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These slides are based on the notes provided by the K V Sangathan. For the revision of thermodynamics the notes are pretty awseome. I f only want submit the home work they will do so.I am sure they will help.
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Entropy
- 2. Measure of a randomness or disorderness
- 3. A perfect crystal has zero entropy at a temperature of absolute zero. System(DS) = 0 at 0 K DSuniverse = DSsystem + DSsurroundings > 0
- 4. A change in order is a change in the number of ways of arranging the particles, and it is a key factor in determining the direction of a spontaneous process. Entropy of an ideal gas: S = k ln W
- 5. Intrinsic property Entropy change Entropy transfer + Entropy generation It can be created but cannot be destroyed Total entropy of a system + surroundings cannot be reduced
- 6. More disorganized a system the higher its entropy Defined using Clausius inequality where Q =differential heat transfer T =absolute temperature The Increase of Entropy Principle which states that the entropy for an isolated system (or a system plus its surroundings) is always increases or, at best, remains the same
- 7. Entropy Balance is used to determine the Change in entropy of a system as follows: Entropy change = Entropy Transfer + Entropy Generation where, Entropy change = DS = S2 - S1 Entropy Transfer = Transfer due to Heat (Q/T) + Entropy flow due to mass flow (misi – mese) Entropy Generation = Sgen 0