0.25 g of ethanol (C₂H₅OH) is burned to heat 200 g of water from 21.0°C to 35.5°C. Calculate the enthalpy of combustion of ethanol in kJ/mol. (Assume no heat loss, c=4.18 J/g°C, Molar mass ethanol = 46.0 g/mol)
A common problem on this worksheet involves the combustion of hexane: Temperature change ( ΔTcap delta cap T ): Heat Energy ( ): Molar Enthalpy ( ΔHcap delta cap H ): Additional Study Resources calorimetry worksheet 2 answers chemsheets
Enthalpy of neutralization = -54.3 kJ/mol (accepted value ≈ -57 kJ/mol, slight difference due to heat loss). slight difference due to heat loss).