BRAND: PHYWE
CODE: P3020461
Description: Principle
The vaporisation of a liquid occurs with heat absorption. To determine the enthalpy of vaporisation, a known mass of the liquid which is to be investigated is vaporised in a special vaporisation vessel in a current of air. The quantity of heat absorbed, which corresponds to the enthalpy of vaporisation, can be calorimetrically determined. Benefits: Simplified implementation: all pre-settings already prepared, Part of a system solution – Easily expandable for further experiments, Calorimeters with particularly high capacitance,Tasks: Determine the molar enthalpy of vaporisation of diethyl ether and methanol, Calculate the molar entropies of vaporisation and discuss the results under consideration of Trouton’s rule. What you can learn about: Enthalpy of vaporisation, Enthalpy of condensation, Enthalpy of sublimation, Vapour pressure, Entropy of vaporisation, Clausius-Clapeyron equation, Trouton’s rule, Law of thermodynamics, Calorimetry Necessary accessories, Precision balance 620g/0.001g, Precision balance 6200g/0.01g Software included. Computer not provided.
Scope of delivery:
1 Cobra4 Sensor-Unit Temperature /12640-00, Semiconductor sensor to measure temperature in the range of -20…110° C., Resolution: 0.05° C, Data flow rate: 200 Hz, 2 Cobra4 Mobile-Link 2 incl. accessories: battery, USB cable,
1 charger and SD memory card /12620-10
1 Cobra4 Sensor-Unit Energy: Current, voltage, work, power / 12656-00
1 measureLAB, multi-user license/ 14580-61
1 Calorimeter, transparent, 1200 ml / 04402-00
1 Evaporation vessel for calorim./ 04405-00
1 Heating coil with sockets / 04450-00
1 PHYWE Power supply, universal DC: 0…18 V, 0…5 A / AC: 2/4/6/8/10/12/15 V, 5 A / 13504-93
4Connecting cord, 32 A, 2000 mm, black | Length: 500 mm / 07361-05
1 Magnetic stirrer with heater MR Hei-Standard / 35751-93
1 Supp.rod stainl.st.,50cm,M10-thr./ 02022-20
1 Magnetic stirring bar 30 mm, oval / 35680-04
1 Separator for magnetic bars / 35680-03
3 Universal clamp / 37715-00
3 Right angle boss-head clamp / 37697-00
1 Retort stand, h = 750 mm / 37694-00
1 Wash bottle, plastic, 500 ml / 33931-00
1 Water jet pump, plastic / 02728-00
1 Security bottle with manometer and three-way stopcock / 34170-88
1 Glass tubes, right-angled, 10 / 36701-57
1 Erlenmeyerkolben, Boro, wide neck | Volume: 250 ml / 46152-00
1 Rubber hose for vacuum | diameter: 6 mm / 39286-00
1 Rubber hose | diameter: 6 mm / 39282-00
5 Hose clip f.12-20 diameter tube/ 40995-00
1 Air control valve / 37003-00
1 Rubber caps, 10 pcs/ 39275-03
1 Diethyl ether 250 ml / 30007-25
1 Methanol 500 ml / 30142-50
1 Water, distilled 5 l / 31246-81
