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Calculate the melting point of benzoic acid (C6H5CO2H), given the following data: ΔHfusion = 18.02 kJ/mol and ΔSfusion = 45.56 J/(mol⋅K)?
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- Happy To HelpLv 56 years agoFavorite Answer
delta S fusion = delta H fusion / Tm
delta S fusion = 45.56 J/mole/K
delta H fusion = 18.02 kJ/mole = 18.02 X 1000 = 18020 J/mole
Tm = melting point = ? K
45.56 = 18020 / Tm
Tm = 18020 / 45.56 = 395.522 K
in degree C ...Tm = 395.522 - 273 = 122.522 degree C
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