CHEMISTRY COMMUNITY - Thermodynamics

Thermodynamics

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Thermodynamic Systems (Open, Closed, Isolated)
Moderators: Chem_Mod, Chem_Admin
Topics: 732

732 Topics

4140 Posts

Last post Re: Thermochemistry during co…
by Sera Aintablian 2E View the latest post
Tue Mar 16, 2021 2:05 am
Thermodynamic Definitions (isochoric/isometric, isothermal, isobaric)
isochoric/isometric: $\Delta V = 0$
isothermal: $\Delta T = 0$
isobaric: $\Delta P = 0$
Moderators: Chem_Mod, Chem_Admin
Topics: 554

554 Topics

2439 Posts

Last post Re: Ideal Gas law for q?
by Anthony_3C View the latest post
Tue Mar 16, 2021 12:16 am
Calculating Work of Expansion
$w=-P\Delta V$
and
$w=-\int_{V_{1}}^{V_{2}}PdV=-nRTln\frac{V_{2}}{V_{1}}$
Moderators: Chem_Mod, Chem_Admin
Topics: 1099

1099 Topics

4357 Posts

Last post Re: irreversible vs reversibl…
by Constance Newell View the latest post
Mon Mar 15, 2021 9:40 pm
Concepts & Calculations Using First Law of Thermodynamics
$\Delta U=q+w$
Moderators: Chem_Mod, Chem_Admin
Topics: 1271

1271 Topics

4677 Posts

Last post Re: Calorimeter
by Anastasia Yulo 1C View the latest post
Mon Mar 15, 2021 3:24 pm
Concepts & Calculations Using Second Law of Thermodynamics
$\Delta S = \frac{q_{rev}}{T}$
Moderators: Chem_Mod, Chem_Admin
Topics: 1191

1191 Topics

3915 Posts

Last post Re: Entropy and Temperature
by Sera Aintablian 2E View the latest post
Tue Mar 16, 2021 1:46 am
Third Law of Thermodynamics (For a Unique Ground State (W=1): S -> 0 as T -> 0) and Calculations Using Boltzmann Equation for Entropy
Boltzmann Equation for Entropy: $S = k_{B} \ln W$
Moderators: Chem_Mod, Chem_Admin
Topics: 526

526 Topics

1664 Posts

Last post Re: Highest molar entropy (te…
by tholz11 View the latest post
Mon Mar 15, 2021 5:23 pm
Entropy Changes Due to Changes in Volume and Temperature
Volume: $\Delta S = nR\ln \frac{V_{2}}{V_{1}}$
Temperature: $\Delta S = nC\ln \frac{T_{2}}{T_{1}}$
Moderators: Chem_Mod, Chem_Admin
Topics: 1085

1085 Topics

3629 Posts

Last post Re: Kate's Midterm Review
by Chem_Mod View the latest post
Tue Mar 16, 2021 10:20 am
Calculating Standard Reaction Entropies (e.g. , Using Standard Molar Entropies)
Moderators: Chem_Mod, Chem_Admin
Topics: 399

399 Topics

1486 Posts

Last post Re: Bond Enthalpies
by Valerie Doan 3I View the latest post
Mon Mar 15, 2021 10:24 pm
Gibbs Free Energy Concepts and Calculations
$\Delta G^{\circ}= \Delta H^{\circ} - T \Delta S^{\circ}$

$\Delta G^{\circ}= -RT\ln K$

$\Delta G^{\circ}= \sum \Delta G_{f}^{\circ}(products) - \sum \Delta G_{f}^{\circ}(reactants)$
Moderators: Chem_Mod, Chem_Admin
Topics: 1497

1497 Topics

5581 Posts

Last post Re: G and Gnaught
by Kelly Yun 2I View the latest post
Tue Mar 16, 2021 5:54 am
Van't Hoff Equation
$\ln K = -\frac{\Delta H^{\circ}}{RT} + \frac{\Delta S^{\circ}}{R}$
Moderators: Chem_Mod, Chem_Admin
Topics: 196

196 Topics

1040 Posts

Last post Re: Celcius vs Kelvin for T1 …
by Diana Aguilar 3H View the latest post
Mon Mar 15, 2021 10:57 pm
Environment, Fossil Fuels, Alternative Fuels
Moderators: Chem_Mod, Chem_Admin
Topics: 16

16 Topics

74 Posts

Last post Re: Concept of "Cold"
by Edgar Velazquez 2K View the latest post
Sun Mar 14, 2021 11:51 pm
Biological Examples (*DNA Structural Transitions, etc.)
Moderators: Chem_Mod, Chem_Admin
Topics: 16

16 Topics

72 Posts

Last post Re: Heat Capacity
by Jacob Schwarz-Discussion 3I View the latest post
Sat Mar 13, 2021 11:27 pm

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