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CHM 471 BIOPHYSICAL CHEMISTRY I EXAM 1 REVIEW

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CHM 471 BIOPHYSICAL CHEMISTRY I EXAM 1 REVIEW Gibbs Free Energy - ANS-ΔG = ΔH-TΔS ΔG = -TΔS_total ΔG is a measure of the maximal, non-expansion work a system can perform. Entropy change (ΔS) - ANS-ΔS = q_rev/T Entropy change for physical or chemical transformation approa...

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  • November 9, 2024
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  • 2024/2025
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CHM 471 BIOPHYSICAL CHEMISTRY I
EXAM 1 REVIEW
Gibbs Free Energy - ANS-ΔG = ΔH-TΔS

ΔG = -TΔS_total

ΔG is a measure of the maximal, non-expansion work a system can perform.

Entropy change (ΔS) - ANS-ΔS = q_rev/T

Entropy change for physical or chemical transformation approaches 0 as T -> 0.

Entropy of all perfectly crystalline substances are the same at T = 0 K, and are equal to
0.

Carnot Cycle efficiency - ANS-Ɛ = -w_cycle/q
= (Th-Tc)/Th

Maximum efficiency is 1.

0th Law of Thermodynamics - ANS-If system A and B are in thermal equilibrium with
system C, then A and B are in thermal equilibrium with one another.

2nd Law of Thermodynamics - ANS-The entropy of an isolated system tends to
increase.

1st Law of Thermodynamics - ANS-Internal energy of an isolated system remains
constant.

Carnot Cycle work equation (1 cycle) - ANS-w_cycle = -nR(Th-Tc)ln(Vb/Va)

Represents maximum amount of work you can extract from one cycle.

Change in internal energy - ANS-ΔU = q + w (work done on sys)
= q - w (work done by sys)

Thermal motion proof - ANS-Equation for force of particles on wall of a container.

Sub in equation for acceleration of particle.

P = F/A = F (1/l^2).

Vx = Vy = Vz for a gas.

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