The combustion of isoctane reaction produces -5099.5 kJ of heat per mole of C8H18 (g) consumed, under standard conditions. The enthalpy of formation (DHf) for CO2(g) and H2O (g) are -393.5 kJ/mol and -241.8 kJ/mol, respectively. Find the standard enthalpy of formation (DHf) of this isomer of C8H18 (g)? (Show work) C8H18 (g) + O2(g) -> 8CO2(g) + 9H2O(g) DHrxn = -5099.5 kJ

Given data , □Hcomb = -5099.5 kJ of heat per mole of C8H18 (g) (□Hf) for CO2(g) = -393.5 kJ/mol…

Answered: The combustion of isoctane reaction…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter10: Fuels, Organic Chemicals, And Polymers

Section: Chapter Questions

Problem 121QRT

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The combustion of isoctane reaction produces -5099.5 kJ of heat per mole of C₈H₁₈ (g) consumed, under standard conditions. The enthalpy of formation (DH_f) for CO₂(g) and H₂O (g) are -393.5 kJ/mol and -241.8 kJ/mol, respectively. Find the standard enthalpy of formation (DH_f) of this isomer of C₈H₁₈ (g)? (Show work)

C₈H₁₈ (g) + O₂(g) -> 8CO₂(g) + 9H₂O(g) DH_rxn= -5099.5 kJ

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