A concentration cell is constructed from two half-cells which are identical, except that the concentration of the ionic species to which the electrode is sensitive is different in the two sides of the cell. Such a cell may be used to measure the solubility product of a sparingly soluble salt. In one half-cell the concentration of these ions is known, in the other it is determined by the solubility product of the salt under investigation. The ratio of the two concentrations (more accurately, activities) determines the e.m.f. of the cell.
| Materiallist (Excerpt) |
Product |
Amount |
|
Set of Analytical Balance Sartorius CPA 224S and measure software, 230 V
|
49221-88
|
1
|
|
Digital pH-meter
|
13702-93
|
1
|
|
Temperature probe Pt-1000
|
13702-01
|
1
|
|
Silver nitrate, cryst. 15 g
|
30222-00
|
1
|
|
Silver foil, 150X150X0.1mm, 25 g
|
31839-04
|
1
|
|
Clay pins, d = 8 mm, l = 15 mm, 2 pcs
|
32486-00
|
1
|
|
Retort stand, h 750 mm
|
37694-00
|
1
|
|
Holder for two electrodes
|
45284-01
|
1
|
|
Nitric acid , 65% 1000 ml
|
30213-70
|
1
|
|
Salt bridge
|
37684-00
|
1
|
|
Water, distilled 5 l
|
31246-81
|
1
|
|
Potassium iodide 50 g
|
30104-05
|
1
|
|
Pipette dish
|
36589-00
|
1
|
|
Potassium nitrate 250 g
|
30106-25
|
1
|
|
Potassium chloride 250 g
|
30098-25
|
1
|
|
Potassium bromide 100 g
|
30258-10
|
1
|
|
Pipettor
|
36592-00
|
1
|
|
Volumetric flask 250 ml, IGJ14/23
|
36550-00
|
12
|
|
Scissors, straight,180 mm
|
64798-00
|
1
|
|
Pasteur pipettes, 250 pcs
|
36590-00
|
1
|
|
Spring balance holder
|
03065-20
|
1
|
|
Weighing dishes, square shape, 84 x 84 x 24 mm, 25 pcs.
|
45019-25
|
1
|
|
Right angle clamp
|
37697-00
|
1
|
|
Rubber caps, pack of 20
|
02615-03
|
1
|
|
Alligator clips, bare, 10 pcs
|
07274-03
|
1
|
|
Volumetric pipette, 25 ml
|
36580-00
|
8
|
|
Graduated cylinder 100 ml
|
36629-00
|
1
|
|
Rubber caps, 10 pcs
|
39275-03
|
1
|
|
Connecting cord, 32 A, 500 mm, red
|
07361-01
|
1
|
|
Connecting cord, 32 A, 500 mm, blue
|
07361-04
|
1
|
|
Glass beaker DURAN®,tall, 150 ml
|
36003-00
|
2
|
|
Glass beaker DURAN®, tall, 50 ml
|
36001-00
|
12
|
|
Glass beaker DURAN®, tall, 250 ml
|
36004-00
|
1
|
|
Cannula 0.6x60 mm, Luer, 20 pcs
|
02599-04
|
1
|
|
Silicone tubing i.d. 7mm
|
39296-00
|
1
|
|
Spoon, special steel
|
33398-00
|
1
|
|
Syringe 10ml, Luer, 10 pcs
|
02590-03
|
1
|
|
Funnel, glass, top dia. 55 mm
|
34457-00
|
4
|
|
Wash bottle, plastic, 500 ml
|
33931-00
|
1
|
|
Graduated pipette, 5 ml
|
36598-00
|
1
|
|
Glass rod,boro 3.3,l=200mm, d=5mm
|
40485-03
|
1
|
|
Laboratory Experiments Physics, Chemistry, Biology andApplied Sciences, CD-ROM, incl. operating manuals
|
16502-42
|
1
|
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