setTimeout(function(){ window.print(); },500)
 

Technical data


Determination of molar masses via a measurement of the boiling point elevation (ebullioscopy)

Article no: P3021900

Principle

Didactic setup to train and demonstrate the determination of molar masses by way of a measurement of the boiling point elevation. The boiling point elevation of aqueous solutions of different substances is determined using. The ebullioscopic constant of water is calculated from the experimental results.

Benefits

  • Compact, easily transportable setup
  • Experimentation made easy by intuitive operation
  • For both demonstration and student experiments

Tasks

  1. Determine the boiling point elevation of aqueous solutions of different substances.
  2. Calculate the ebullioscopic constant of water from the experimental results.

Learning objectives

  • Molar mass
  • Boiling point elevation
  • Ebullioscopy
  • Ebullioscopic constant

Necessary accessories

  • Precision balance 620g/0.001g

 

Scope of delivery

Retort stand, h = 750 mm 37694-00 1
Right angle boss-head clamp 37697-00 3
Universal clamp 37715-01 3
Apparatus for elevation of boiling point 36820-00 1
Temperature meter digital, 4-2 13618-00 1
Sheath Thermocouple, NiCr-Ni, Type K, -40°C ... +1000°C 13615-06 1
Protective sleeves f.temp.probe,2 11762-05 1
Round-bottom flask, 250 ml, GL 25 MAU-27220002 1
Beakers, Boro, high form, various sizes 46027-00 1
Gasket for GL25, 8mm hole, 10 pcs 41242-03 1
Silicone tubing, various diameters 39296-00 1
Mortar with pestle, 150 ml, porcelain 32604-00 1
Pinchcock, width 15 mm 43631-15 1
Microspoon, steel 33393-00 1
Wash bottle, plastic, 500 ml 33931-00 1
Pellet press for calorimeter 04403-04 1
Heating mantle f. roundbottom flask, 250ml 49542-93 1
Clamp for heating mantle 49557-01 1
Power regulator 32288-93 1
Weighing dishes, square shape, 84 x 84 x 24 mm, 500 pcs. 45019-50 1
Funnels (glass), Boro, various sizes 34459-00 1
Pasteur pipettes, 250 pcs 36590-00 1
Rubber caps, 10 pcs 39275-03 1
Boiling beads, 200 g 36937-20 1
Exsicator, DURAN® 34130-00 1
Porcelain plate f.desiccator150mm 32474-00 1
Watch glass, dia.80mm 34572-00 1
Glycerol, 250 ml 30084-25 1
Urea, 250 g 30086-25 1
Hydroquinone 250 g 30089-25 1
Water, distilled 5 l 31246-81 1
Universal power supply, 600mA 3/4.5/5/6/7.5/9/12V, incl. 9 adaptors 11078-99 1

PHYWE Systeme GmbH & Co. KG
Robert-Bosch-Breite 10 – 37079 Göttingen – Germany
www.phywe.com