Calculate Δ_rG° at 298 K Using the Following Information: 4HNO₃(g)

question 84

Multiple Choice

Calculate Δ_rG° at 298 K using the following information: 4HNO₃(g) + 5N₂H₄(l) → 7N₂(g) + 12H₂O(l) Δ_rG° = ?
Δ_fH° (kJ mol^-1) -133.9 50.6 -285.8
S°(J K^-1 mol^-1) 266.9 121.2 191.6 70.0

• A) +4.90 × 10³ kJ mol^-1
• B) +3.90 × 10³ kJ mol^-1
• C) -2.04 × 10³ kJ mol^-1
• D) -3.15 × 10³ kJ mol^-1
• E) -3.30 × 10³ kJ mol^-1

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Definitions:

Left Atrium

One of the four chambers of the heart, which receives oxygenated blood from the pulmonary veins and pumps it into the left ventricle.

Right Ventricle

The chamber of the heart that receives deoxygenated blood from the right atrium and pumps it to the lungs for oxygenation.

Cardiac Muscle Fibers

Cardiac muscle fibers are specialized heart muscle cells that contract rhythmically and make up the myocardium of the heart.

Intercalated Discs

Specialized connections between cardiac muscle cells that enable the rapid spread of electrical signals for synchronized heart contractions.