Why might the Calcium ethanoate and Ethanol react this way?
The mixture instantly becomes a white, clear gel. When the beaker is turned upside down, the mixture stays solid and remains at the bottom of the beaker.
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Calcium ethanoate (also called calcium acetate) is the calcium salt of acetic acid and can be written as (H3CCO2)2Ca. It is a very hygroscopic solid, meaning that it absorbs and coordinates with water very readily. When ethanol is added to a saturated aqueous solution of calcium ethanoate it causes a white gel to form immediately. This is because the calcium ethanoate is relatively insoluble in ethanol as opposed to water thus it precipitates as a solid. But instead of forming a powdery solid it coordinates with both the water and ethanol present to make a very moist, gelatinous solid. This is why it sticks to the bottom of the beaker instead of pouring out with any liquid.
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