Consider the combustion of X (unknown compound): 2 X + 3 02 2 CO2 + 4 H2O with AH'rxn = -1452.8 kJ/mol. Calculate AH'f of X. Given: AH*f(CO2) = -393.5 KJImol: AH f(H20) = -285.8 kJ/mol O -238.7 k.J/mol O -679.3 kJ/mol O +238,7 kJ/mol 477.4 kJ/mol

Consider the combustion of X (unknown compound): 2 X + 3 02 2 CO2 + 4 H2O with AH'rxn = -1452.8 kJ/mol. Calculate AH'f of X. Given: AH*f(CO2) = -393.5 KJImol: AH f(H20) = -285.8 kJ/mol O -238.7 k.J/mol O -679.3 kJ/mol O +238,7 kJ/mol 477.4 kJ/mol

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 97QRT

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Question

Consider the combustion of X (unknown compound): 2 X + 3 02 - 2 CO2 + 4
H2O with AH'rxn = -1452.8 kJ/mol. Calculate AH°f of X. Given: AH*f(CO2) = -393.5
kJ/mol: AH'f(H20) = -285.8 kJ/mol
O -238.7 kJ/mol
O -679 3 kJ/mol
O +238,7 kJ/mol
O 477.4 kJ/mol

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