CHE 132 Lecture Notes - Lecture 4: Gibbs Free Energy, Thermodynamics

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viridianhare340

5 Feb 2019

School

Stony Brook University

Department

Chemistry

Course

CHE 132

Professor

Fernando Raineri

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CHE 132 Lecture 3: CHE 132 Lecture 3

CHE 132 Lecture Notes - Lecture 4: Gibbs Free Energy, Thermodynamics

CHE 132 Lecture 5: CHE 132 Lecture 5

Document Summary

Che 132 lecture 4: thermodynamics continued: spontaneous processes occur without an energy input, entropy=s and it is a state function, the configurational entropy of a system is s=k ln(w). If gibbs free energy is negative then the process is spontaneous. If the gibbs free energy is positive then the process is non spontaneous. This leads to there being an increased number of micro states available. If the change in entropy of the universe is greater than or less than zero, then the process is irreversible.

Related Questions

Indicate whether each statement is true or false. (a) If a system undergoes a reversible process, the entropy of the universe increases. (b) If a system undergoes a reversible process, the change in entropy of the system is exactly matched by an equal and opposite change in the entropy of the surroundings. (c) If a system undergoes a reversible process, the entropy change of the system must be zero. (d) Most spontaneous processes in nature are reversible.

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Help please

1. Check all of the following statements that are true:

a. The value of q is always equal to the value of w for a reversible reaction

b. The energy change of the universe for any spontaneous process is always positive

c. The equilibrium constant is always equal to one for any system at equilibrium

d. The free energy change for any spontaneous process is always positive

e. None of these statements are true

f. The entropy change of the universe for any spontaneous process is always positive

g. The equilibrium constant is always greater than one for an extensive reaction

2. What mass of Na₂SO₄ is required to make 60 mL of a 0.20 M Na₂SO₄ solution? Report your answer to three places past the decimal point.

_____g of Na₂SO₄

3. Select all of the compounds below that are more soluble in water than in CCl₄. (You should check anywhere from one to four boxes.)

HCl

NH₃

FeCl₂

Cl₂

None of these are more soluble in water

CHE 132 Lecture Notes - Lecture 4: Gibbs Free Energy, Thermodynamics

CHE 132 Lecture 3: CHE 132 Lecture 3

CHE 132 Lecture Notes - Lecture 4: Gibbs Free Energy, Thermodynamics

CHE 132 Lecture 5: CHE 132 Lecture 5

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