Determination of the enthalpy of vaporisation of liquids with CobraSMARTsense

Item No. P3020467

EUR 4,235.70
Content 1 piece
EUR 5,040.48 Incl. VAT

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

  1. Determine the molar enthalpy of vaporisation of diethyl ether and methanol.
  2. Calculate the molar entropies of vaporisation and discuss the results under consideration of Trouton's rule.

Learning objectives

  • 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.

Device name
Item No.
Quantity
Cobra SMARTsense Temperature - Sensor for measuring temperature -40 ... 120 °C (Bluetooth)
Item No. 12903-00
1
Cobra SMARTsense Voltage - Sensor for measuring electrical voltage ± 30 V (Bluetooth + USB)
Item No. 12901-01
1
Cobra SMARTsense High Current - Sensor for measuring electric current ± 10 A (Bluetooth + USB)
Item No. 12925-00
1
measureLAB, multi-user license
Item No. 14580-61
1
Calorimeter, transparent, 1200 ml
Item No. 04402-00
1
Evaporation vessel for calorim.
Item No. 04405-00
1
Heating coil with sockets
Item No. 04450-00
1
PHYWE Power supply, universal, analog display DC: 18 V, 5 A / AC: 15 V, 5 A
Item No. 13503-93
1
Connecting cable, 32 A, black, various lengths | Length: 500 mm
Item No. 07361-05
6
Magnetic stirrer with heater MR Hei-Standard
Item No. 35753-93
1
Supp.rod stainl.st.,50cm,M10-thr.
Item No. 02022-20
1
Magnetic stirring bar 30 mm, oval
Item No. 35680-04
1
Separator for magnetic bars
Item No. 35680-03
1
Universal clamp
Item No. 37715-01
3
Right angle boss-head clamp
Item No. 37697-00
3
Retort stand, h = 750 mm
Item No. 37694-00
1
Syringe 20ml, Luer, 100 pcs
Item No. 02591-10
1
Cannula 0.9x70mm, Luer, 20 pcs
Item No. 02597-10
1
Wash bottle, plastic, 500 ml
Item No. 33931-00
1
Water jet pump, plastic
Item No. 02728-00
1
Security bottle with manometer and three-way stopcock
Item No. 34170-88
1
Glass tubes, right-angled, 150 x 80 mm
Item No. MAU-10022500
1
Erlenmeyer flasks, Boro, wide neck, various sizes | Volume: 250 ml
Item No. 46152-00
1
Rubber hose for vacuum, various diameters | diameter: 6 mm
Item No. 39286-00
1
Rubber hose, various diameters | diameter: 6 mm
Item No. 39282-00
1
Hose clip f.12-20 diameter tube
Item No. 40995-00
5
Air control valve
Item No. 37003-00
1
Rubber caps, 10 pcs
Item No. 39275-03
1
Diethyl ether 250 ml
Item No. 30007-25
1
Methanol 500 ml
Item No. 30142-50
1
Water, distilled 5 l
Item No. 31246-81
1
Holder for Cobra SMARTsense
Item No. 12960-00
2
Nach oben

Please note

* Prices subject to VAT.

We only supply institutions and educational facilities. No sales to private individuals.

Please note: To comply with EU regulation 1272/2008 CLP, PHYWE does not sell any chemicals to the general public. We only accept orders from resellers, professional users and research, study and educational institutions.