Exam 1 Review of Chapter 10 | Lecture Note - Edubirdie

University:
York University
Course:
CHEM 1001 | Chemical Dynamics
Academic year:

2022
Views:

399

Pages:

1
Author:

Niklas

Exam #1 Chapter 10 Expansion/Compression of a Gas Reversible vs. Irreversible Maximum work done: Reversible expansion Minimum work done: Reversible compression PV = nRT For isothermal processes: V₁/V₂ = T₂/T₁ For adiabatic processes: PV^γ = constant ΔG is very dependent on temperature ΔH: Always depends on temperature ΔS: Depends on temperature ΔG: Depends on temperature Third Law of Thermodynamics: Entropy (S) is 0 at 0 Kelvin. Standard Entropy We can measure absolute standard entropy. ΔS(non) = ΣS°(products) - ΣS°(reactants) Carnot Cycle Choosing two reversible adiabatic steps to connect the two reversible isothermal steps. Maximum efficiency for a heat engine because all steps are done reversibly. Energy efficiency: η = 1 - (Tcold / Thot) Real Engines Real engines have lower efficiency because the rate is not zero and friction consumes energy.

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