The Combustion of Acetylene in the Presence of Excess Oxygen

question 122

Multiple Choice

The combustion of acetylene in the presence of excess oxygen yields carbon dioxide and water: 2C₂H₂ (g) + 5O₂ (g) → 4CO₂ (g) + 2H₂O (l)
The value of ΔS° for this reaction is ________ J/K ∙ mol.

• A)+689.3
• B)+122.3
• C)+432.4
• D)-122.3
• E)-432.4

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