CHEMISTRY · Single correct · AP · Chemistry · Thermochemistry · Thermochemistry
Problem
Determine the amount of heat, in kilojoules, absorbed when 0.450 mol of liquid ethanol at its normal boiling point is completely converted to vapor at the same temperature. (Molar enthalpy of vaporization of ethanol = 38.6 kJ mol⁻¹.)
(a) 38.6kJ
(b) −17.4kJ
(c) 17.4kJ
(d) 18.3kJ