Nernst equation with Cobra SMARTsense Principle The Nernst equation states how the electrical potential of an electrode in contact with an ionic solution depends on the concentrations (more precisely, activities) of these ions. The equation can be verified experimentally by using an electrochemical cell consisting of an inert indicator electrode coupled to a suitable reference electrode (here in the form of an ORP combination electrode). Benefits - Relevant both for chemists and for physicists
- Essential introductory experiment for studying battery technology
Tasks Measure the potential of a platinum electrode with our ORP electrode immersed in solutions of known concentrations of the iron(ll) and iron(lll) complex ions [Fe(CN)6]4 - and [Fe(CN)6]3-. Learning objectives - Electrode potentials and their concentration dependence
- Redox electrodes
- Electrochemical cells
Necessary accessories - Analytical balance 120g/0.1mg
Software included. Computer not provided.
Scope of delivery |
Cobra SMARTsense Thermocouple - Sensor for measuring temperature -200 ... +1200 °C (Bluetooth + USB)
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12938-01
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1
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Cobra SMARTsense ORP - Sensor for measuring the redox potential ±2000 mV (Bluetooth)
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12927-00
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1
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Sheath Thermocouple, NiCr-Ni, Type K, -40°C ... +1000°C
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13615-06
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1
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Connecting cable, 32 A, black, various lengths
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07361-05
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1
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Magnetic stirrer without heating, 3 ltr., 230 V
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35761-99
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1
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Magnetic stirring bar 30 mm, cylindrical
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46299-02
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1
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Retort stand, h = 750 mm
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37694-00
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2
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Right angle boss-head clamp
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37697-00
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2
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Universal clamp
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37715-01
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1
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Burette clamp, roller mount., 2 pl.
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37720-00
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1
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Burette, lateral stopcock, Schellbach, 50 ml
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MAU-24022024
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2
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Weighing dishes, square shape, 84 x 84 x 24 mm, 500 pcs.
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45019-50
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1
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Beakers, Boro, high form, various sizes
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46026-00
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2
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Beakers, Boro, high form, various sizes
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46032-00
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4
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Volumetric flasks, Boro, various sizes
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36552-00
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4
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Bulb pipettes, various sizes
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36581-00
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2
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Pipettor
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36592-00
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1
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Pipette dish
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36589-00
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1
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Funnels (glass), Boro, various sizes
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34459-00
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2
| |
Funnels (glass), Boro, various sizes
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34457-00
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2
| |
Pasteur pipettes, 250 pcs
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36590-00
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1
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Rubber caps, 10 pcs
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39275-03
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1
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Spoon, special steel
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33398-00
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1
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Wash bottle, plastic, 500 ml
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33931-00
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1
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Potass.hexacyanoferrate/II/250 g
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30101-25
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1
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Potass.hexacyanoferrate/III/100g
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30100-10
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1
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Water, distilled 5 l
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31246-81
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1
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Holder for Cobra SMARTsense
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12960-00
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2
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Necessary accessories |
Analytical Balance, Sartorius, 220 g : 0.1 mg
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49300-99
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Service
