For Which Reaction Is ΔH Approximately (Or Exactly) Equal to ΔU

question 92

Multiple Choice

For which reaction is ΔH approximately (or exactly) equal to ΔU?

• A) H₂(g) + Br₂(g) → 2HBr(g)
• B) H₂O(l) → H₂O(g)
• C) CaCO₃(s) → CaO(s) + CO₂(g)
• D) 2H(g) + O(g) → H₂O(l)
• E) CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l)

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Definitions:

Shaking

Involuntary, rhythmic muscle movements often resulting from neurological conditions, emotional states, or physiological reactions.

Cerebral Medulla

Often referring to the inner region of an organ, it can be a misnomer for brain regions such as the cerebral cortex or medulla oblongata, depending on context.

Nerve Tracts

Bundles of nerve fibers that connect different regions of the brain and spinal cord, enabling communication within the nervous system.

White Matter

Composed of bundles of myelinated nerve fibers (axons) connecting various grey matter areas of the brain to each other.