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Coulometric Titration of Sodium Thiosulfate with Iodine

In this experiment you will determine the concentration of Na2S2O3 present in a solution. You will place a known number of drops of this solution into a vessel, and then add to this an excess of potassium iodide (KI) and a few drops of starch solution. Two electrodes will then be inserted into the solution and the electrodes will be connected to a variable voltage source (9V battery and a potentiometer, see Figure 1). A milliameter (mA) will also be included in the circuit to measure the current. Contains enough materials for 15 groups.

Kit Includes:
2 x 50 ml Sodium Thiosulfate, 0.001M Solution
1 x 15 ml Potassium Iodide, 0.1% Solution
1 x 10 ml Starch, 1% Solution
4 x 25 ml Sulfuric Acid, 1.0M Solution UN2796
30 Vials
30 3-Hole Plastic Lids
15 Drop-Burettes
15 Plastic Pipettes
60 Silver Electrodes
15 Microspatula
60 Electrical Connecting Wires
15 Comboplates

For refills of chemicals see item number IS6022.

Details


SKU	IS6110
Date of update	19-11-2008
Mfr. Code	IS6110
Price:	$ 719.25

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Coulometric Titration of Sodium Thiosulfate with Iodine

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