Free response: thermodynamics!

The Thermodynamics of Ethanol

Molar Enthalpy of Combustion

Through calorimetry, the researcher determines that a 1.000-gram sample of pure ethanol releases 28.76 kilojoules of heat.

 

 

 

 

What is the molar heat of combustion for ethanol in kilojoules per mole at 25C?

A. -2650. kJ

B. -28.67 kJ

C. -1325 kJ

D. -57.52 kJ

 

if there is no second law of thermodynamics, how thermodynamics will be used?

Problem 14.30 fromThermodynamics, Statistical thermodynamics and kinetics by Engel2nd ed.

The answer should be 451 cm^-1. Thanks

What is the second law of thermodynamics? How is Entropy defined? Use the second law of thermodynamics to show that heat cannot spontaneously flow from a cold body to a hot body