Determination of the enthalpy of neutralisationof neutralisation with CobraSMARTsense  ![]() Principle 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. Benefits - Simplified implementation: all pre-settings already prepared
- Calorimeters with particularly high capacitance
- Part of a system solution - Easily expandable for further experiments
Tasks - Measure the temperature change during the neutralisation of a dilute potassium hydroxide solution with dilute hydrochloric acid.
- Calculate the enthalpy of neutralisation.
Learning objectives - Enthalpy of neutralisation
- Calorimetry
- Heat capacity
Necessary accessories - Precision balance 6200g/0.01g
Scope of delivery |
Cobra SMARTsense Voltage - Sensor for measuring electrical voltage ± 30 V (Bluetooth + USB)
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12901-01
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1
| |
Cobra SMARTsense High Current - Sensor for measuring electric current ± 10 A (Bluetooth + USB)
|
12925-00
|
1
| |
Cobra SMARTsense Temperature - Sensor for measuring temperature -40 ... 120 °C (Bluetooth)
|
12903-00
|
1
| |
measureLAB, multi-user license
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14580-61
|
1
| |
Calorimeter, transparent, 1200 ml
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04402-00
|
1
| |
Delivery pipette
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04402-10
|
1
| |
Heating coil with sockets
|
04450-00
|
1
| |
PHYWE Power supply, universal, analog display DC: 18 V, 5 A / AC: 15 V, 5 A
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13503-93
|
1
| |
Connecting cable, 32 A, black, various lengths
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07361-05
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6
| |
Magnetic stirrer with heater MR Hei-Standard
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35753-93
|
1
| |
Magnetic stirring bar 30 mm, oval
|
35680-04
|
1
| |
Separator for magnetic bars
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35680-03
|
1
| |
Supp.rod stainl.st.,50cm,M10-thr.
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02022-20
|
1
| |
Universal clamp
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37715-01
|
2
| |
Right angle boss-head clamp
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37697-00
|
2
| |
Pipettor
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36592-00
|
1
| |
Rubber bulb, double
|
39287-00
|
1
| |
Pinchcock, width 15 mm
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43631-15
|
1
| |
Volumetric flasks, Boro, various sizes
|
36551-00
|
2
| |
Beakers, Boro, high form, various sizes
|
46026-00
|
1
| |
Beakers, Boro, high form, various sizes
|
46029-00
|
1
| |
Pasteur pipettes, 250 pcs
|
36590-00
|
1
| |
Rubber caps, 10 pcs
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39275-03
|
1
| |
Wash bottle, plastic, 500 ml
|
33931-00
|
1
| |
Potassium hydroxide pellets,500 g
|
30103-50
|
1
| |
Hydrochloric acid, 1.0 mol/l, 1000 ml
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48454-70
|
1
| |
Water, distilled 5 l
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31246-81
|
1
|
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Service
