In thermodynamics, the entropy of vaporization is the increase in entropy upon vaporization of a liquid. This is always positive, since the degree of disorder increases in the transition from a liquid in a relatively small volume to a vapor or gas occupying a much larger space. At standard pressure = 1 bar, the value is denoted as and normally expressed in joules per mole-kelvin, J/(mol·K). For a phase transition such as vaporization or fusion (melting), both phases may coexist in equilibrium at constant temperature and pressure, in which case the difference in Gibbs free energy is equal to zero: where is the heat or enthalpy of vaporization. Since this is a thermodynamic equation, the symbol refers to the absolute thermodynamic temperature, measured in kelvins (K). The entropy of vaporization is then equal to the heat of vaporization divided by the boiling point: According to Trouton's rule, the entropy of vaporization (at standard pressure) of most liquids has similar values. The typical value is variously given as 85 J/(mol·K), 88 J/(mol·K) and 90 J/(mol·K). Hydrogen-bonded liquids have somewhat higher values of (Wikipedia).
Entropy production during free expansion of an ideal gas by Subhadip Chakraborti
Abstract: According to the second law, the entropy of an isolated system increases during its evolution from one equilibrium state to another. The free expansion of a gas, on removal of a partition in a box, is an example where we expect to see such an increase of entropy. The constructi
From playlist Seminar Series
Physics - Thermodynamics 2: Ch 32.7 Thermo Potential (10 of 25) What is Entropy?
Visit http://ilectureonline.com for more math and science lectures! In this video explain and give examples of what is entropy. 1) entropy is a measure of the amount of disorder (randomness) of a system. 2) entropy is a measure of thermodynamic equilibrium. Low entropy implies heat flow t
From playlist PHYSICS 32.7 THERMODYNAMIC POTENTIALS
HEAT OF VAPORIZATION - a quick definition
A quick definition of heat of vaporization. Chem Fairy: Louise McCartney Director: Michael Harrison Written and Produced by Kimberly Hatch Harrison ♦♦♦♦♦♦♦♦♦♦ Ways to support our channel: ► Join our Patreon : https://www.patreon.com/socratica ► Make a one-time PayPal donation: https
From playlist Chemistry glossary
Mixing of Lennard-Jones particles of two different sizes and masses
Like the video https://youtu.be/opy4fzvxs8g this simulation shows the mixing of 819 particles interacting via a Lennard-Jones potential. The difference is that unlike in the previous video, the orange particles have twice the mass, and sqrt(2) times the radius, of the blue ones. It appear
From playlist Molecular dynamics
Entropy is often taught as a measure of how disordered or how mixed up a system is, but this definition never really sat right with me. How is "disorder" defined and why is one way of arranging things any more disordered than another? It wasn't until much later in my physics career that I
From playlist Thermal Physics/Statistical Physics
Topics in Combinatorics lecture 10.0 --- The formula for entropy
In this video I present the formula for the entropy of a random variable that takes values in a finite set, prove that it satisfies the entropy axioms, and prove that it is the only formula that satisfies the entropy axioms. 0:00 The formula for entropy and proof that it satisfies the ax
From playlist Topics in Combinatorics (Cambridge Part III course)
General Chemistry: Lec 5. Phase Diagrams and Phase Transitions
UCI Chem 1B General Chemistry (Spring 2012) Lec 05. General Chemistry -- Phase Diagram and Phase Transitions -- View the complete course: http://ocw.uci.edu/courses/chem_1b_general_chemistry.html Instructor: A.J. Shaka. Ph.D. License: Creative Commons BY-NC-SA Terms of Use: http://ocw.u
From playlist Chemistry 1B: General Chemistry
Entropy is a very weird and misunderstood quantity. Hopefully, this video can shed some light on the "disorder" we find ourselves in... ________________________________ More videos at: http://www.youtube.com/TheScienceAsylum T-Shirts: http://scienceasylum.spreadshirt.com/ Facebook: http:/
From playlist Thermodynamics
Thermodynamics 4a - Entropy and the Second Law I
The Second Law of Thermodynamics is one of the most important laws in all of physics. But it is also one of the more difficult to understand. Central to it are the concepts of reversibility and entropy. Note on the definition of a "closed system." I am using the term "closed system" in th
From playlist Thermodynamics
Engineering MAE 91. Intro to Thermodynamics. Lecture 16.
UCI MAE 91: Introduction to Thermodynamics (Spring 2013). Lec 16. Intro to Thermodynamics -- Simple Power Plant -- View the complete course: http://ocw.uci.edu/courses/mae_91_introduction_to_thermal_dynamics.html Instructor: Roger Rangel, Ph.D. License: Creative Commons CC-BY-SA Terms of
From playlist Engineering MAE 91. Intro to Thermodynamics
Lec 19 | MIT 5.60 Thermodynamics & Kinetics, Spring 2008
Lecture 19: Clausius-Clapeyron equation. View the complete course at: http://ocw.mit.edu/5-60S08 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 5.60 Thermodynamics & Kinetics, Spring 2008
Thermodynamics 4d - Entropy and the Second Law IV
We now have the tools we need to calculate the precise entropy change of an ideal monatomic gas.
From playlist Thermodynamics
Engineering MAE 91. Intro to Thermodynamics. Lecture 13.
UCI MAE 91: Introduction to Thermodynamics (Spring 2013). Lec 13. Intro to Thermodynamics -- Entropy -- View the complete course: http://ocw.uci.edu/courses/mae_91_introduction_to_thermal_dynamics.html Instructor: Roger Rangel, Ph.D. License: Creative Commons CC-BY-SA Terms of Use: http:/
From playlist Engineering MAE 91. Intro to Thermodynamics
Physical chemistry is the study of macroscopic, and particulate phenomena in chemical systems in terms of the principles, practices, and concepts of physics such as motion, energy, force, time, #thermodynamics, #quantum chemistry, #statistical mechanics, analytical dynamics and chemical eq
From playlist Physical Chemistry
General Chemistry: Lec. 12. Free Energy & Review Problems
UCI Chem 1B General Chemistry (Spring 2012) Lec 12. General Chemistry -- Free Energy and Review Problems -- View the complete course: http://ocw.uci.edu/courses/chem_1b_general_chemistry.html Instructor: A.J. Shaka. Ph.D. License: Creative Commons BY-NC-SA Terms of Use: http://ocw.uci.ed
From playlist Chemistry 1B: General Chemistry
Phase Transitions: Diversity in dynamics by Subir Das
Program Entropy, Information and Order in Soft Matter  ORGANIZERS Bulbul Chakraborty, Pinaki Chaudhuri, Chandan Dasgupta, Marjolein Dijkstra, Smarajit Karmakar, Vijaykumar Krishnamurthy, Jorge Kurchan, Madan Rao, Srikanth Sastry and Francesco Sciortino DATE & TIME 27 August 2018 to
From playlist Entropy, Information and Order in Soft Matter
General Chemistry 1B. Lecture 10. Physical Equilibrium, Part I
UCI Chem 1B General Chemistry (Winter 2013) Lec 10. General Chemistry Intermolecular Forces -- Physical Equilibrium -- Part 1 View the complete course: http://ocw.uci.edu/courses/chem_1b_general_chemistry.html Instructor: Donald R. Blake, Ph.D. License: Creative Commons BY-NC-SA Terms of
From playlist General Chemistry 1B
DoR#13 Predicting Entropy Changes
Year 11 Chemistry Drivers of Reactions Predicting Entropy Changes
From playlist Y11 Chem Mod 4 Drivers of Reactions
Physics - Thermodynamics: (5 of 5) Entropy and Heat Exchange: Example 4
Visit http://ilectureonline.com for more math and science lectures! In this video I will show you how to calculate the entropy and heat exchange of 1 mol of diatomic gas.
From playlist PHYSICS - THERMODYNAMICS
Gibbs Free Energy - Entropy, Enthalpy & Equilibrium Constant K
This video provides a basic introduction into Gibbs Free Energy, Entropy, and Enthalpy. It explains how to calculate the equilibrium constant K given the standard free energy change of a reaction and so much more. Get The Full 1 Hour 49 Minute Video on Patreon: https://www.patreon.com/Ma
From playlist New AP & General Chemistry Video Playlist