As O₂(l) Is Cooled at 1 Atm, It Freezes at 54.5

question 42

Multiple Choice

As O₂(l) is cooled at 1 atm, it freezes at 54.5 K to form Solid I. At a lower temperature, Solid I rearranges to Solid II, which has a different crystal structure. Thermal measurements show that ΔH for the I → II phase transition is -743.1 J/mol and that ΔS for the same transition is -17.0 J/K mol. At what temperature are Solids I and II in equilibrium?

• A) 43.7 K
• B) 2.06 K
• C) 53.4 K
• D) 31.5 K
• E) They can never be in equilibrium because they are both solids.

---

Definitions:

Feminism

A movement and ideology advocating for equality between genders and seeking to challenge and change societal norms and structures that perpetuate gender discrimination.

Philosophy of Equality

A moral, political, or social philosophy advocating for equal rights and opportunities for all individuals or groups, regardless of various differences.

Facets of Life

Refers to the various aspects that make up human life, including physical, social, psychological, and spiritual dimensions.

Aggressive Person

An individual characterized by behavior intended to harm or assert dominance over others, often through verbal or physical means.