What is the enthalpy change for the combustion of 4.73 g C₄H₁₀ in excess oxygen?

Question

Quizplus · Accepted Answer

To solve the problem, we need to use the balanced chemical equation for the combustion of C₄H₁₀: C₄H₁₀ + 8O2 → 6CO2 + 4H2O + 4SO2 We also need the molar mass of C₄H₁₀ which is 288 g/mol. Using stoichiometry, we can find the amount of heat released by the combustion of 4.73 g of C₄H₁₀: 4.73 g C₄H₁₀ × (1 mol/288 g) × (-3498 kJ/mol) = -154 kJ The negative sign indicates that heat is released, and the answer is D, -154 kJ.

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