Class Notes (1,100,000)
US (480,000)
UC-Irvine (20,000)
CHEM (1,000)
CHEM 1B (100)
Lecture 11

CHEM 1B Lecture 11: Lecture 11 Thermodynamics


Department
Chemistry
Course Code
CHEM 1B
Professor
Craig Murray
Lecture
11

This preview shows page 1. to view the full 4 pages of the document.
Midterm(Test(Questions(Review
***(standard(state(of(gas(=(pure(gas(@(pressure(of(1(atm
Entropy(is(a(state(function(so(wrev(is(equal(to(wirrev
Lecture(Notes:(
Heat(Transfer(and(Entropy(Changes(of(the(Surroundings
Some(spontaneous(processes(have(πž“S(<(0(;(e.g.(crystallization,(freezing
2nd(law:(Spontaneous(process(requires(πž“Suniv(>(0
πž“S(is(change(in(entropy(of(the(system:(also(need(to(consider(the(
surroundings
πž“Suniv(=(πž“S(+(πž“Ssurr
πž“S(<(0(can(be(compensated(by(a(larger(πž“Ssurr(>(0
Surroundings(are(large(relative(to(system:(constant(T(and(heat(transfer(is(
reversible
πž“S(=(qrev(/(T
πž“Ssurr(=(-πž“H(/(T((((((((,(constant(P,(T
Exothermic(process:(πž“H(<(0(and(πž“S(>(0
Endothermic(process:((πž“H(>(0(and(πž“S(<(0
Isothermal(expansion(of(an(ideal(gas:(reversible(
Reversible(and(irreversible(=(both(not(spontaneous(
Audio 1
Audio(recording(started:(2:04(PM(Monday,(February(6,(2017
Audio 2
Audio(recording(started:(2:30(PM(Monday,(February(6,(2017
Lecture'11:'Thermodynamics
Monday,(February(6,(2017
1:59(PM
You're Reading a Preview

Unlock to view full version