Hydrogen peroxide 30% in a large round flask decomposes to boiling water and oxygen when postassium iodide is added.
The 12L Round Bottom Flask is set on white C-Fold towels covering a large cork ring on the lab bench. 100-150 ml of 30% hydrogen peroxide is carefully poured in. The liquid should be visible against the white towels from the perspective of the class, and any camera, if used.
The catalyst is 5 g of potassium iodide in a small plastic weighing boat labeled KI.
Safety goggles and gloves. Raise the projection screen and make sure the flask is...
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