Question

Homework #1 Based on the type or types of intermolecular force, predict the substance in each pair that has the highest boiling point: a) Diethyl ether (CHsCH2OCH2CHs) or 1-butanol (CH3CH2CH2CH2OH) b) SO2 or SO 1. Ethanol (C2H5OH) melts at-114°C and boils at 78 ℃. The enthalpy of fusion of ethanol is 502 kJ/mol, and its enthalpy of vaporization is 38.56 kJ/mol. The specific heat capacity of solid and liquid ethanol are 0.97 and 2.3 J/8-K, respectively. a) How much heat is required to convert 42.0 g of ethanol at 35 °C to the vapor phase at 78 2. How much heat is required to convert 42.0 g of ethanol at -155 °C to the vapor phase at 78 ℃? b) 3. Place the following substances in order of increasing volatility: CHa, CBr, CH Cl2, CH:CI, CHBrs and CHaBr2.

Answer 1

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