Hess’s law

LC3.3.2.3
Hess’s law
Hess’s law

Description

Hess's law states that the sum of the enthalpy change of a reaction is the same in every reaction path. In this experiment the students study Hess's law by measuring the enthalpy change of the neutralisation of sodium hydroxide solution over 2 different reaction pathways.

Components of equipment sets

1 6753410  4 
Water, pure, 5 l LD
1 6736810  4 
Sodium hydroxide, pellets, 250 g LD
GHS05 Danger H314 H290
1 30121  8 
Stand base MF LD
1 30123  4 
Stand feet, pair LD
1 30109  4 
Bosshead S LD
2 301271  4 
Stand rod 40 cm, 10 mm Ø LD
1 666555  4 
Universal clamp 0...80 mm LD
1 6045682  4 
Powder spatula, steel, 185 mm LD
2 664154  4 
Watch glass dish 80 mm Ø LD
1 665754  4 
Measuring cylinder 100 ml, with plastic base LD
1 667017  4 
Scissors 125 mm, round-ended LD
1 661035  8 
Round filter, Type 595, 125 mm Ø, Set of 100 LD
1 38233  4 
Thermometer, -10...+150 °C/1 K LD
1 664131  4 
Beaker Boro 3.3, 400 ml, squat LD
1 604298  4 
Plastic cup, set of 5 LD
1 610010  8 
Laboratory safety goggles LD
1 667609  4 
Safety gloves, nitrile rubber, size 8 LD
1 666851  4 
Stirring magnet, 25 mm x 6 mm Ø, circular LD
1 607105  8 
Magnetic stirrer mini LD
1 ADACB501  4 
Compact scale 500 g : 0.1 g LD
1 6736810  4 
Sodium hydroxide, pellets, 250 g LD
GHS05 Danger H314 H290
1 6746920  4 
Hydrochloric acid, approx. 2 mol/l, 500ml LD
GHS05 Warning H290
1 6753410  4 
Water, pure, 5 l LD
Print page

Contact Us

Technical Service & Support:

Online Service Portal
Do you have any questions or suggestions regarding our devices, products, experiments, equipment sets or about our software? You need spare parts? FORM

Repair Service
You would like to register a repair? FORM

Europe
For European distributors, please visit: European distributors
Worldwide requests
Please contact us per email: sales@ld-didactic.de

 Click here for our contact form and postal address.

Contact Us