What Is the Standard Enthalpy Change for the Decomposition of One

question 55

Multiple Choice

What is the standard enthalpy change for the decomposition of one mole of SO₃? 2SO₂ + O₂→ 2SO₃ ΔH°_rxn = -198 kJ/mol

• A) 198 kJ/mol
• B) -99.0 kJ/mol
• C) 99.0 kJ/mol
• D) 396 kJ/mol
• E) -396 kJ/mol

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