Sodium acetate is sodium acetate, which is weakly alkaline. The alkaline strength can be compared to the corrosiveness of soda ash, so it is corrosive. If it is placed in the refrigerator, it should be frozen and kept dry. Refrigeration will absorb water.

As for sodium acetate ice making, it is actually a process of crystallization of supersaturated sodium acetate.

This is a supersaturated sodium acetate solution, and the whole process is like this.

The first method: Prepare a clean bowl (preferably ceramic), which must be clean and free of any dust. Pour half a bowl of purified water and heat it. Add sodium acetate trihydrate continuously. The basic proportion is 30g of water.

50g sodium acetate trihydrate, stir until all is dissolved (it is best to use a ceramic spoon, which must be clean). Let it cool down, cover it with something, don't let dust fall in, and don't shake it at all. You can also insert a straw to light the horse.

Yes, the effect should be the same as the video you see.

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================== Principle: The solubility of sodium acetate at high temperature is higher than that at low temperature. Therefore, at low temperature, the sodium acetate in the solution is excessive, but due to the surface

It is smooth, the solvent is clean, and there is no vibration, so it is not easy to precipitate crystals, thus causing supersaturation.

When you light the straw or even insert the straw, the dust brought in can act as the core for crystal formation, so the crystal grows rapidly. Since sodium acetate can bring multiple crystallization waters, the entire water in the bowl is used up by its crystallization.

So it looks like the entire bowl is frozen.

In fact, it is a bowl of sodium acetate crystals. You can dry them and continue to use the second method next time: the supersaturation phenomenon of sodium acetate. Supplies: beaker, glass rod, alcohol lamp, filter paper, flat-bottomed flask, asbestos mesh.

Sodium acetate crystals, sodium thiosulfate crystals, distilled water.

Steps: ① Preparation of sodium acetate supersaturated solution: Add 250 grams of non-deliquesced sodium acetate crystals (CH3COONa·3H2O) and 150 ml of distilled water into a 500 ml beaker, heat over low heat and stir continuously to completely dissolve.

While hot, filter the solution into a 500 ml clean and dry flat-bottomed flask (note! Do not drip the solution on the neck of the flask).

After cooling, seal the bottle tightly with a clean rubber stopper.

② Preparation of supersaturated solution of sodium thiosulfate: Place 250 grams of sodium thiosulfate crystals (Na2S2O3·5H2O) in a dry and clean flat-bottomed flask, heat it in a water bath, and dissolve it in the crystal water.

Leave to cool, then seal the bottle tightly with a clean rubber stopper and set aside.

Operation: Put small crystals of the same solute into the bottle so that the crystals quickly fill the entire flask.

Notes: . ① Sodium acetate crystals easily absorb moisture, so the amount of medicine can be increased appropriately.

②Dust can also cause supersaturated solutions to crystallize, so the flat-bottomed flask must be clean and the bottle mouth must be tightly closed.

③The seed crystal should be small and the crystal shape should be good, so that the crystal grows slowly and the phenomenon is clear.

Purpose of the experiment: Understand supersaturated solutions and supersaturated solutions are not as stable as saturated solutions.