Heimexperimente

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Hypersatured solution of sodium acetate I: Preparing the solution in a sealed pipette1: Setup, 2: Adding 1 mL water to 8 mL of crystals, 3: Heating for dissolving, 4: Transfer to pipette, 5: Sealing Videoclip 1

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Hypersatured solution of sodium acetate II: Exothermic Crystallisation

6: Two sealed pipettes with hypersaturated solution of sodium acetate with the temperature sensor in between,
7. Cutting the seal, 8 and 9: Progress of crystallisation, 10. Increase of temperature by 24°C and volume reduction.

Videoclip 2

For copyright and information about teaching aids please contact: Professor Dr. Najdoski, Skopje University, Macedonia

first published: 22.09. 2005 last modification: 17.12.097 back