In Terms of the Enthalpy of Formation, Which of the Following

question 124

Multiple Choice

In terms of the enthalpy of formation, which of the following compounds is the most unstable compared to its elements under standard conditions?

• A)KCl(s), 435.9 kJ/mol
• B)PH₃(g), 5.4 kJ/mol
• C)Fe₃O₄(s), 1,117.1 kJ/mol
• D)NiO(s), 239.7 kJ/mol
• E)ICl(g), 17.8 kJ/mol

---

Definitions:

Learning History

A record of an individual’s experiences that impact how they respond or adapt to similar future situations.

Etiology

The study of the causes or origins of diseases or conditions.

Mood Disorders

A category of psychiatric disorders characterized by a disturbance in an individual's mood, which can include depression and bipolar disorder.

Stressful Life

Refers to the presence of events or circumstances that significantly strain an individual's coping mechanisms, potentially impacting mental and physical health.