GUIDE QUESTIONS:1. Calculate the heat of combustion of the following reactions (show the computation).Use the enthalpy of formation of the substances given below:SubstancesCO2 (a)H2O )AH? (k]/mol)-393.5-285.8O2 ig)CH3CH2OH-276.98CH3(CH2)2OHCH3(CH2)»OH-303.3-332.8a. combustion of ethanolCH,CH2OH, + 30zig) → 2CO29) + 3H2Omb. combu stion of propanolCH3(CH2)OH, +4.5O2g)3CO20) + 4H2O)c. combu stion of butanolCH:(CH,),OH + 60zg)- 4COzp) + 5H;O

Heat of combustion is the amount of energy absorbed or released during the decomposition of a…

GUIDE QUESTIONS: 1. Calculate the heat of combustion of the following reactions (sh ow the computation) Use the enthalpy of formation of the substances given below: Substances CO2 (0) H2O Oz g) CH3CH2OH CH3(CH2)2OH CH3(CH2)»OH AH? (kJ/mal) -393.5 -285.8 -276.98 -303.3 -332.8 a. combustion of ethanol CH,CH2OH, + 3029) → 2CO29) + 3H2O) b. combustion of propanol CH:(CH2)OH) +4.5Oz19) → 3CO29) + 4H;O c. combustion of butanol CH:(CH2),OH + 602(9) → 4COzip) + 5H;O

GUIDE QUESTIONS: 1. Calculate the heat of combustion of the following reactions (sh ow the computation) Use the enthalpy of formation of the substances given below: Substances CO2 (0) H2O Oz g) CH3CH2OH CH3(CH2)2OH CH3(CH2)»OH AH? (kJ/mal) -393.5 -285.8 -276.98 -303.3 -332.8 a. combustion of ethanol CH,CH2OH, + 3029) → 2CO29) + 3H2O) b. combustion of propanol CH:(CH2)OH) +4.5Oz19) → 3CO29) + 4H;O c. combustion of butanol CH:(CH2),OH + 602(9) → 4COzip) + 5H;O

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter5: Thermochemistry

Section: Chapter Questions

Problem 5.79QE

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GUIDE QUESTIONS: Calculate the heat of combustion of the following reactions (show the computation). Use the enthalpy of formation of the substances given below: Substances CO2 (g) -393.5 H2O (l) -285.8 O2 (g) 0 CH3CH2OH -276.98 CH3(CH2)2OH -303.3 CH3(CH2)3OH -332.8 a. combustion of ethanol b. combustion of propanol c. combustion of butanol
H2O = -285.5 CO2 = -393 C2H6 = -83.6 enthalpy cycle and enthalpy of combustion