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Physical Chemistry Exam 1(100% Correct)
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system - ANSWER part of the universe in which we are interested open system - ANSWER can exchange energy and matter across its boundaries closed system - ANSWER can exchange energy, not matter across its boundaries isolated system - ANSWER can exchange neither energy nor matter across ...

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  • September 30, 2024
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  • 2024/2025
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  • physical chemistry exam 1100 correct
  • physical chemistry exam 1100 correctstuvia
  • system answer part of the universe in which we

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Physical Chemistry Exam 1(100%
Correct)

system - ANSWER part of the universe in which we are interested



open system - ANSWER can exchange energy and matter across its boundaries



closed system - ANSWER can exchange energy, not matter across its boundaries



isolated system - ANSWER can exchange neither energy nor matter across its boundaries



properties - ANSWER any measurable quantities characterizing a system



extensive properties - ANSWER proportional to mass of system



intensive properties - ANSWER independent of mass of system



state of a system - ANSWER specificiation of a certain number of variables (ex: mass, identity, state
of matter, temperature, pressure, volume etc.)



equation of state - ANSWER P = f (nvt)



ideal/perfect gas - ANSWER one where molecules possess negligible volume, and where there is no
interaction or repulsive among molecules



ideal gas equation/law - ANSWER PV = nRT (or P = nRT/V; equation of state of ideal gas)



molar volume equation - ANSWER v(bar) = v/n = m^3/mol



ideal gas equation with molar volume instead of volume - ANSWER v/n = RT/P

, Compressibility factor equation - ANSWER Z = Vbar / Vbar naught



Compressibility factor equation for an ideal gas - ANSWER Z = PVbar/RT



Virial Equation (Actual) - ANSWER Z = 1 + B/Vbar + C/Vbar^2 + D/vbar^3 +....



Virial equation for Ideal Gas - ANSWER PVbar/RT = 1 + B/Vbar + C/Vbar^2 + D/Vbar^3 +....



nb - ANSWER total effective volume for a real gas system with n moles



Reduction of pressure equation - ANSWER a(n^2/v^2)



van der Waals equation of state - ANSWER (P+ an^2/v^2) (V-nb) = nRT



(b) van der Waals parameter - ANSWER total effective volume of 1 mole of that gas molecule



Tc - ANSWER Critical temperature, the temperature above which no condensation can occur no
matter how great the pressure is



Vapor - ANSWER gaseous phase of a substance below its Tc



gas - ANSWER gaseous phase of a substance above its Tc



kinetic model regarding pressure of a gas equation - ANSWER P = Nm*vbar^V



average/mean squared velocity equation - ANSWER v1^2 + v2^2 + v3^2... / N



kinetic energy of an ideal gas equation - ANSWER PV = 2N/3 * Ebar (trans)



Etrans equation - ANSWER Ebar(trans) = 3/2 KbT

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