Excess enthalpies of binary mixtures of some propylamines + some propanols at 298.15 K

摘要: Abstract The molar excess enthalpies of 1,2- and 1,3-propanediamine + 1- or 2-propanol 1,3-propanediol + 1- 2-propaneamine have been determined at 298.15 K using a twin-microcalorimeter for series runs over the whole range mole fractions. All were large exothermic, in particular, systems amines + propanediols more than −5 kJ mol −1 minimum. Primary secondary alcohols amines showed systematically different enthalpic behaviors. Equilibrium constant K1 expressed terms fractions standard enthalpy formation 1:1 complex evaluated by ideal mixtures momomeric molecules their associated complexes.