Mischungskalorimetrie mit einem verdrängungskalorimeter,dargestellt an den systemen benzol + n-heptan, 2-methylnaphthalin + 1-methylnaphthalin,toloul + chlorbenzol und chlorbenzol + äthylbenzol

The design of a displacement calorimeter and the methods of measuring positive and negative enthalpies of mixing are described. The calorimeter has been checked by measuring the enthalpies of mixing of benzene + n-heptane and toluene + chlorobenzene at 25°C. Measurements for the systems 2-methylnaphthalene + 1-methylnaphthalene and chlorobenzene + ethylbenzene at 45°C and 25°C, respectively, are reported.