If the Standard Enthalpy of Combustion of Ethanol, C₂H₅OH(l),At 298

question 35

Multiple Choice

If the standard enthalpy of combustion of ethanol, C₂H₅OH(l) ,At 298 K is -1368 kJ.mol^-1 ,What is the standard enthalpy of formation of ethanol? The standard enthalpies of formation of carbon dioxide and liquid water are -393.51 and -285.83 kJ.mol^-1 ,Respectively.

• A) +688.7 kJ.mol^-1
• B) -344.3 kJ.mol^-1
• C) +276.5 kJ.mol^-1
• D) -276.5 kJ.mol^-1
• E) -688.7 kJ.mol^-1

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