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

Item No. P3020767

40 Minutes

20 Minutes

medium

EUR 3,947.40

Content 1 piece

EUR 4,697.41 Incl. VAT

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

Record temperature-time curves for the dissolution of anhydrous copper sulphate and hydrated copper sulphate in water.
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.

Device name

Item No.

Quantity

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

Cobra SMARTsense Thermocouple - Sensor for measuring temperature -200 ... +1200 °C (Bluetooth + USB)

Item No. 12938-01

1

measureLAB, multi-user license

Item No. 14580-61

1

Calorimeter, transparent, 1200 ml

Item No. 04402-00

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

Magnetic stirring bar 30 mm, oval

Item No. 35680-04

1

Separator for magnetic bars

Item No. 35680-03

1

Supp.rod stainl.st.,50cm,M10-thr.

Item No. 02022-20

1

Right angle boss-head clamp

Item No. 37697-00

1

Universal clamp

Item No. 37715-01

1

Mortar with pestle, 150 ml, porcelain

Item No. 32604-00

1

Powder funnels, plastic, various sizes | Top diameter: 65 mm

Item No. 34472-00

1

Beakers, Boro, high form, various sizes | Volume: 50 ml

Item No. 46025-00

2

Spoon, special steel

Item No. 33398-00

1

Evaporating dish, porcelain, various sizes | Top diameter: 100 mm

Item No. 32518-00

1

Crucible tongs, 200 mm, stainless steel

Item No. 33600-00

1

Tripod,ring d=140 mm, h=240 mm

Item No. 33302-00

1

Wire gauze with ceramic, 160 x 160 mm

Item No. 33287-01

1

Butane burner, Labogaz 206 type

Item No. 32178-00

1

Butane cartridge C206, without valve, 190 g

Item No. 47535-01

1

Exsicator, DURAN®

Item No. 34130-00

1

Porcelain plate f.desiccator150mm

Item No. 32474-00

1

Silicon grease Molykote, 50 g

Item No. 31863-05

1

Silica gel, orange, granular, 500 g

Item No. 30224-50

1

Wash bottle, plastic, 500 ml

Item No. 33931-00

1

Copper-II sulphate, anhydr. 250 g

Item No. 31495-25

1

Copper-II sulphate,cryst. 250 g

Item No. 30126-25

1

Water, distilled 5 l

Item No. 31246-81

1

Sheath Thermocouple, NiCr-Ni, Type K, -40°C ... +1000°C

Item No. 13615-06

1

Holder for Cobra SMARTsense

Item No. 12960-00

2

Name

Filename

Filesize

Filetyp

(en) Versuchsbeschreibung

p3020767_en .pdf

Filesize 1.79 Mb

pdf

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