Ethanol (C2H5OH) melts at -114 âC and boils at 78 âC. Theenthalpy of fusion of ethanol is 5.02 kJ/mol, and its enthalpy ofvaporization is 38.56 kJ/mol. The specific heat of solid and liquidethanol are 0.97 J/gâ K are 2.3 J/gâ K respectively.How much heat isrequired to convert 37.0 g of ethanol at -166 âC to the vapor phaseat 78 âC?

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Collen VonLv2

11 Apr 2019

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Ethanol (C₂H₅OH) melts at –114 °C and boils at 78 °C. The enthalpy of fusion of ethanol is 5.02 kJ/mol, and its enthalpy of vaporization is 38.56 kJ/mol. The specific heats of solid and liquid ethanol are 0.97 and 2.3 J/g-K, respectively. (a) How much heat is required to convert 42.0 g of ethanol at 35 °C to the vapor phase at 78 °C? (b) How much heat is required to convert the same amount of ethanol at –155 °C to the vapor phase at 78 °C?

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Ethanol, CH3CH2OH melts at 159 K and boils at 351 K. The heat of fusion is 5.02 kJ/mol and the heat of vaporization is 38.56 kJ/mol. The specific heats of solid, liquid and gaseous ethanol are 0.97, 2.3 and 1.9 J/g

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