(15 points) Circle TRUE and write nothing if true. If false, cross out TRUE and

Question

(15 points) Circle TRUE and write nothing if true. If false, cross out TRUE and explain why 1. TRUE do work When the Helmholtz energy is negative, the system is able to 2. TRUE chemical potential of monatomic and diatomic ideal gases is the same. When using partition functions, just like with the pressure, the 3. TRUE At a phase change, temperature, volume, and pressure must be constant in order to develop the concept of the chemical potential. 4. TRUE The third law of thermodynamics guarantees that as entropy approaches zero, every substance will form a perfect crystal. An exothermic reaction with an increase in entropy will always 5. TRUE be spontaneous

Explanation / Answer

1. True

Explanation: The negative of the difference in the Helmholtz energy is equal to the maximum amount of work that the system can perform in a thermodynamic process in which volume is held constant.

2. True

Explanation: The chemical potential term doesn't involve the terms Cv (specific heat capacity at constant volume) or Cp (specific heat capacity at constant pressure), which are different for monoatomic and diatomic gases.

3. False

Explanation: Any two variables (temperature, pressure) or (temperature, volume) should be constant to develop a concept of chemical potential.

4. True

Explanation: According to the third law of thermodynamics, the entropy of a perfect crystalline substance at absolute zero is exactly equal to zero.

5. True

Explanation: In case of exothermic reactions, the degree of randomness/disorder ness increases, i.e. entropy increases. Therefore, it's spontaneous process.

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.