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Octane (C8H18) undergoes combustion according to the following thermochemical equation: 2C8H18(l) ...

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Octane (C8H18) undergoes combustion according to the following thermochemical equation: 2C8H18(l) ...

Octane (C₈H₁₈) undergoes combustion according to the following thermochemical equation:
2C₈H₁₈(l) + 25O₂(g) → 16CO₂(g) + 18H₂O(l) ΔH°_rxn = –11,020 kJ/mol.
Given that ΔH°_f[CO₂(g)] = –393.5 kJ/mol and ΔH°_f[H₂O(l)] = –285.8 kJ/mol, calculate the standard enthalpy of formation of octane.

▸ –210 kJ/mol

▸ –11,230 kJ/mol

▸ 22,040 kJ/mol

▸ –420 kJ/mol

▸ 420 kJ/mol

Textbook

Chemistry

Edition: 11^th

Authors: Chang, Goldsby

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