gibbs free energy thermochemistry notes

# gibbs free energy thermochemistry notes - Notes~ Thermo7 ­...

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Notes~ Thermo7 ­ Gibbs Free Energy and Spontaneity ­ filled in.notebook Gibbs Free Energy: ∆H, ∆S and Spontaneity Notes #7 Let's Review: value of ∆H value of ∆S Spontaneity Calculating the Gibbs Free Energy (∆G) for Chemical or Physical Processes using ∆H & ∆S & Temp: Use the equation: ∆G = ∆H ­ T*∆S Note: T must be in Kelvin Remember: 0oC = 273 K, therefore, K = oC + 273 Let's Explore the Relationship between the signs of ∆G , ∆H & ∆S: ∆G = ∆H ­ T*∆S if ­∆H and +∆S if +∆H and ­∆S if ­∆H and ­∆S if +∆H and +∆S April 13, 2015 Notes~ Thermo7 ­ Gibbs Free Energy and Spontaneity ­ filled in.notebook Calculating the Free Energy Change for a Reaction (∆Grxn) given Table of ∆Gof The Go can be used to calculate the ∆Grxn for a chemical reaction using the following equation: ∆Grxn = [Sum of ∆Gfo of the products] — [Sum of ∆Gfo of the reactants] Example: What is ∆Grxn for the following reaction: 2 CO (g) + O2 (g) à 2 CO2 (g) Use a Table of Gof to look up the values for the ∆Gof of CO , O2 and CO2 . ∆Grxn = Changes in Entropy and Enthalpy and the Spontaneity of Chemical/Physical Processes Spontaneity: ∆S measures: ∆H measures: April 13, 2015 ...
View Full 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