According to Ellingham Diagram, the Reduction of Al₂O₃ with Carbon

question 4

Multiple Choice

According to Ellingham diagram, the reduction of Al₂O₃ with carbon is feasible above 2400C, why is Al₂O₃ reduced in practice electrochemically rather than chemically with carbon?

• A) The temperature is too high and maintaining it is too expensive.
• B) It is difficult to achieve correct Al₂O₃-to-carbon ratio in practice.
• C) Formed Al is reducing enough to reduce CO and CO₂ back to carbon.

---

Definitions:

Cortisol

A steroid hormone released by the adrenal glands in response to stress or low blood-glucose concentration; it plays a key role in the body's stress response.

Proactive Coping

A form of coping where individuals anticipate potential stressors and take action in advance to prevent or mitigate their impact.

Defensive Coping

Strategies used to protect oneself from psychological harm.

American Children

Young individuals who are citizens or residents of the United States, encompassing a diverse background of cultural, social, and economic backgrounds.