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Free Energy and Equilibrium: Calculating Delta G under Non-Standard Conditions, Lecture notes of Chemistry

A comprehensive guide on free energy and equilibrium, focusing on calculating delta g under non-standard conditions. It includes various scenarios, equations, and real-life examples to help understand the concept of free energy change in chemical reactions. Topics such as lechatelier's principle, gibbs free energy, and equilibrium constants, making it an excellent resource for students studying thermodynamics or chemical kinetics.

Typology: Lecture notes

2023/2024

Uploaded on 04/10/2024

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Free Energy and Equilibrium
Back to LeChat’s…three scenarios:
I.
II.
III.
Correcting for non-standard conditions
G°Keq
pf3
pf4
pf5

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Free Energy and Equilibrium

Back to LeChat’s…three scenarios: I. II. III. Correcting for non-standard conditions  G ° Keq

(kJ/mol)

10 200

 G

ln Q

a. If ( 1 ) is at equilibrium, calculate Kp.

What is the free energy change for the process under the conditions: T = 25 °C, P (N 2 ) = 0.870 atm , P (H 2 ) = 0.250 atm, and (NH 3 )= 12.9 atm?

What about at 875 °C in a 5.00 L flask

containing 0.100 mol of each gas?

What happens to free energy as a

reaction proceeds??

A ⇌ B

G A

G B

If we start with pure A,

Turning some A into B

Real Example:

H 2 ( g ) + I 2 ( g ) ⇌ 2 HI ( g )

Q = Keq =