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

question 11

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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