When a strong acid is neutralised with a strong base in dilute solution, the same amount of heat is always released. If the reaction takes place under isobaric conditions, this heat is known as the enthalpy of neutralisation. The chemical reaction which generates this heat is the reaction of protons and hydroxyl ions to form undissociated water. It therefore correlates to the enthalpy of formation of water from these ions.


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


  1. Measure the temperature change during the neutralisation of a dilute potassium hydroxide solution with dilute hydrochloric acid.
  2. Calculate the enthalpy of neutralisation.

What you can learn about

  • Enthalpy of neutralisation
  • Calorimetry
  • Heat capacity

Necessary accessories

  • Precision balance 6200g/0.01g


Scope of Supply
Device NameItem no.Qty
Beaker, Borosilicate, tall form, 600 ml46029-001,00
curricuLAB measureLAB, multi-user license14580-611,00
Hydrochloric acid, 1.0 mol/l,48454-701,00
Potassium hydroxide pellets,5030103-501,00
Wash bottle, plastic, 500 ml33931-001,00
Connecting cord, 32 A, 500 mm, black07361-054,00
Beaker, Borosilicate, tall form, 100 ml46026-001,00
Pasteur pipettes, 250 pcs36590-001,00
Calorimeter, transparent, 1200 ml04402-001,00
Rubber caps, 10 pcs39275-031,00
Separator for magnetic bars35680-031,00
Cobra4 Sensor-Unit Temperature12640-001,00
Magnetic stirrer with heater MR Hei-Standard35751-931,00
Delivery pipette04402-101,00
Rubber bulb, double39287-001,00
Magnetic stirring bar 30 mm, oval35680-041,00
Cobra4 Sensor-Unit Energy: Current, voltage, work, power12656-001,00
Right angle boss-head clamp37697-002,00
Potassium hydroxid for 1l 1mol31425-001,00
Heating coil with sockets04450-001,00
Pinchcock, width 15 mm43631-151,00
Volumetric flask 500 ml, IGJ19/2636551-002,00
PHYWE power supply, universal DC: 0...18 V, 0...5 A / AC: 2/4/6/8/10/12/15 V, 5 A13504-931,00
Universal clamp37715-002,00
Water, distilled 5 l31246-811,00

Downloads and Documents

Document  Filesize
p3020861e.pdfExperiment guide, English387.96 KB