Boiling points of aqueous solutions of dextrose within the pressure range of 200 to 1,500 millimeters

Abstract

By using twin ebulliometers of the Swietoslawski type, with water as the reference standard, data were obtained on the vapor-pressure-temperature relationship for aqueous solutions of dextrose. The pressures ranged from 200 to 1,500 millimeters and the concentrations of the solutions from 10 to 60 percent of dextrose by weight. The vapor-pressure-temperature relationship is expressed by equations of the form lA in which p is the vapor pressure in standard millimeters of mercury exerted by a solution of a given concentration at the temperature, t, in degrees Celsius. A, B, and Care constants. The boiling-point elevations of aqueous dextrose solutions at a given pressure are expressed by equations of the form in which At represents the boiling-point elevation in degrees Celsius at a given pressure, c is the concentration in weight percentage of dextrose, and a, /?, y, and b are constants.