pchem_checklistkeyideas_ch03

# pchem_checklistkeyideas_ch03 - Atkins& de Paula...

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Unformatted text preview: Atkins & de Paula: Atkins’ Physical Chemistry 8e Checklist of key ideas Chapter 3: The Second Law Chapter 3: The Second Law spontaneous process, a process that does not require work to be done to bring it about. Second Law of thermodynamics: (Kelvin statement) No process is possible in which the sole result is the absorption of heat from a reservoir and its complete conversion into work. THE DIRECTION OF SPONTANEOUS CHANGE 3.1 The dispersal of energy Collapse into disorder as the driving force of change. Chapter 3: The Second Law 3.2 Entropy Second Law of thermodynamics (entropy statement): The entropy of an isolated system increases in the course of a spontaneous change: Δ S tot > 0. thermodynamic definition of entropy, d S = d q rev / T . entropy change in the surroundings, Δ S sur = q sur / T sur . entropy change for an adiabatic process, Δ S sur = 0. Boltzmann formula for the entropy, S = k ln W . statistical entropy, the entropy calculated by using the Boltzmann formula. Chapter 3: The Second Law Carnot cycle, a cycle composed of alternating isothermal and adiabatic reversible expansions and compressions. efficiency of a heat engine, ε = | w |/ q h ....
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pchem_checklistkeyideas_ch03 - Atkins& de Paula...

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