Benefits

• Compact, easily transportable setup
• For both demonstration and student experiments
• No gas burner required – Easy to operate and no consumption of consumables
• No open flame in the setup – Reduction of thermal hazard

Water, distilled 5 l

Round flask, 100 ml, 3-n., 3 x GL25

Hotplate magnetic stirrer with connection for electronic contact thermometer, 3 ltr., 230 V

Glass tubes,straight, 200 mm, 10

Stopcock,1-way,r.-angled, glass

Universal clamp with joint

Students thermometer,-10…+110°C, l = 180 mm

Vacuum tube, NBR, 6/14mm, 1 m

Gasket for GL25, 8mm hole, 10 pcs

Beaker, 400 ml, low-form

Beaker, 600 ml, low-form

Magnetic stirring bar 30 mm, cylindrical

Glass tube 200 mm ext. d=8 mm

Support base DEMO

Support rod, stainless steel, 750 mm

Support rod, stainless steel, l=370 mm, d=10 mm

Rotary valve vacuum pump, two stages, 115 V / 230 V

Manometer -1.0…0.6 bar

Right angle clamp expert

Tasks

1. About 250 ml of demineralised water are allowed to boil for about 10 minutes to eliminate all traces of dissolved gas. The water is then cooled down to room temperature.
2. The 3-neck round flask is filled about three-quarters full with gas-free water and heated. At 35 °C the space above the water within the round flask is evacuated. Further heating causes an increase in pressure p and temperature T of water within the round flask. p and T are read in steps of 5 °C up to a maximum of T = 85 °C.

What you can learn about

• Pressure
• Temperature
• Volume
• Vaporization
• Vapour pressure
• Clausius-Clapeyron equation