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Technical data


Determination of the hydration enthalpy of an electrolyte (solution enthalpy) with Cobra SMARTsense

Item No. P3020767

Principle

When a solid electrolyte dissolves in water, a positive or negative heat effect occurs as a result of the destruction of the crystal lattice and the formation of hydrated ions. The enthalpy of hydration of copper sulphate can be calculated from the different heats of reaction measured when anhydrous and hydrated copper sulphate are separately dissolved in water.

Benefits

  • Calorimeters with particularly high capacitance
  • Part of a system solution - Easily expandable for further experiments
  • Simplified implementation: all pre-settings already prepared

Tasks

  1. Record temperature-time curves for the dissolution of anhydrous copper sulphate and hydrated copper sulphate in water.
  2. Calculate the hydration enthalpy of anhydrous copper(II)sulphate.

Learning objectives

  • Integral enthalpy of solution
  • Hess's law
  • Lattice energy
  • Ion solvation
  • Calorimetry

Necessary accessories

  • Precision balance 6200g/0.01g

 This experiment requires a computer. Software provided.

Scope of supply

Cobra SMARTsense Voltage - Sensor for measuring electrical voltage ± 30 V (Bluetooth + USB) 12901-01 1
Cobra SMARTsense High Current - Sensor for measuring electric current ± 10 A (Bluetooth + USB) 12925-00 1
Cobra SMARTsense Thermocouple - Sensor for measuring temperature -200 ... +1200 °C (Bluetooth + USB) 12938-01 1
measureLAB, multi-user license 14580-61 1
Calorimeter, transparent, 1200 ml 04402-00 1
Heating coil with sockets 04450-00 1
PHYWE Power supply, universal, analog display DC: 18 V, 5 A / AC: 15 V, 5 A 13503-93 1
Connecting cable, 32 A, black, various lengths 07361-05 6
Magnetic stirrer with heater MR Hei-Standard 35753-93 1
Magnetic stirring bar 30 mm, oval 35680-04 1
Separator for magnetic bars 35680-03 1
Supp.rod stainl.st.,50cm,M10-thr. 02022-20 1
Right angle boss-head clamp 37697-00 1
Universal clamp 37715-01 1
Mortar with pestle, 150 ml, porcelain 32604-00 1
Powder funnels, plastic, various sizes 34472-00 1
Beakers, Boro, high form, various sizes 46025-00 2
Spoon, special steel 33398-00 1
Evaporating dish, porcelain, various sizes 32518-00 1
Crucible tongs, 200 mm, stainless steel 33600-00 1
Tripod,ring d=140 mm, h=240 mm 33302-00 1
Wire gauze with ceramic, 160 x 160 mm 33287-01 1
Butane burner, Labogaz 206 type 32178-00 1
Butane cartridge C206, without valve, 190 g 47535-01 1
Exsicator, DURAN® 34130-00 1
Porcelain plate f.desiccator150mm 32474-00 1
Silicon grease Molykote, 50 g 31863-05 1
Silica gel, orange, granular, 500 g 30224-50 1
Wash bottle, plastic, 500 ml 33931-00 1
Copper-II sulphate, anhydr. 250 g 31495-25 1
Copper-II sulphate,cryst. 250 g 30126-25 1
Water, distilled 5 l 31246-81 1
Sheath Thermocouple, NiCr-Ni, Type K, -40°C ... +1000°C 13615-06 1
Holder for Cobra SMARTsense 12960-00 2

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