Limited time offer 20% OFF StudySoup Subscription details

Texas State - Chem 1342 - Class Notes

Created by: Skylar A Elite Notetaker

> > > > Texas State - Chem 1342 - Class Notes

Texas State - Chem 1342 - Class Notes

Join more than 18,000+ college students at Texas State University who use StudySoup to get ahead
School: Texas State University
Department: Business
Course: General Chemistry II
Professor: Jeff McVey
Term: Spring 2019
Tags: Gibbs Free Energy
Name: CHEM 1342 weekly notes
Description: these notes cover gibbs free energy and a few important concepts and equations needed for the upcoming exam.
Uploaded: 04/27/2019
2 Pages 19 Views 15 Unlocks
  • Better Grades Guarantee
  • 24/7 Homework help
  • Notes, Study Guides, Flashcards + More!

Unformatted text preview: 4/22 Ch 19 Pt 2 - Gibb's Free Energy Review: 2nd Law The increase of entropy in the Universe is necessary for any spontaneous process (Out Some result in a lower entropy) A Scale A Suniverse - A smundings + 4 Ssystem if arxnis exothermic O sus <0 9 Sure > O AS sur > 0 the entropy of the Surroundings increases if heat is evolved (if system loses heat) AS surr = -9.sys AS sur = -AH /T @constant p Gibb's Free Energy AS01 : A Suniv = ASS + AS system * Substitute AS Sur. = - 4H sys/T A Suniv. 3 - AH sys/T + AS system - TAS - A Hsys - TAS sys + Gibb's free energy Free Energy & Free Energy Change . for a process Constant TAP SEA G Sys = AHS - TAS sys if AGD Inegative), a process is Spontaneous Suniv>O if AG > @ (positive), a process is non spontaneous Sunir <0 * the reverse rum is spontaneous * *if AG B the process is equilibrium *Temperature & Spontaneity w Under what conditions SAG negative? LAGAH-TAS . Consider the Sims of AH AS L>if AH S () AS is (+): always negative! always spontaneous! if AH IS (+) AS 5 (-) . it is never Spontaneous At what temperature does a ran become Sporttaneous ? . AGAHTAS as AG passes from (+) (-) it crosses 0 : AH - TAS TEAHAS @ temp rxn begins to occur AG Olways (-) Olways (+) SPVT sp@1 AH - TAS - (+) (-) (+) =Additional Meaning of AG the "free energy is the of energy Dv Dilable do work one rxn moy drive another: Cuz 018) + AG37 - 140 kJ 2 CV (S) + 72 02.(4) (15) + /20169) 2012 AG375 = -143.8 kJ Cuz Dis) + (15) 2 Cuis) + C019) AG'375 -3.865 Review AH -EAH products - <A He reactants Six EA Soducts - EA Sveactants A Gran > SAGarducts - EAG reactants (kJ/mol AS = AH - AG Gibbs Energy & Equilibrium AG-AG + Rtin (Q) - nonstd. 19 AG (not provided) AGO AGE-RT in K - provided of Ke Por eso tempo [Q=1.0 under 000 Convert Std conditions

Join StudySoup for FREE
Get Full Access to Texas State - Class Notes - Week 8
Join with Email
Already have an account? Login here
×
Log in to StudySoup
Get Full Access to Texas State - Class Notes - Week 8

Forgot password? Reset password here

Forgot password? Reset your password here

I don't want to reset my password

Need help? Contact support

Need an Account? Is not associated with an account
Sign up
We're here to help

Having trouble accessing your account? Let us help you, contact support at +1(510) 944-1054 or support@studysoup.com

Got it, thanks!
Password Reset Request Sent An email has been sent to the email address associated to your account. Follow the link in the email to reset your password. If you're having trouble finding our email please check your spam folder
Got it, thanks!
Already have an Account? Is already in use
Log in
Incorrect Password The password used to log in with this account is incorrect
Try Again

Forgot password? Reset it here