A Solution Which Has A Concentration That Exceeds Its Predicted Solubility At A Certain Temperature And Pressure Would Be -?


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James FitzGerald Profile
The term you are looking for is supersaturation. The term is derived from a solution that contains more of the dissolved material than could be dissolved by the solvent under normal situations.
It also pays reference to know that you must consider it also refers to a vapor of a compound that has a greater or higher (partial) pressure than the vapor pressure of that actual compound itself.
In fact when one examines carbonated water, this is also a supersaturated solution of carbon dioxide gas in water.
There are countless drinks that contain this supersaturated solution such as Lemonade, Ginger Ale, Orangeade and Coca Cola.
Coca Cola has become a phenomenal hit over the last 100 plus years. In fact it was so popular it was shipped out to all Americans during the War effort in World War II.
There are rumours abound that the original formula was derived from the coca leaf in cocaine but this seems to be only a myth. In the bottle there is more carbon dioxide which can dissolve in water than at atmospheric pressure.
If you combine the Coca Cola with Mentos there is a real atomic explosion due to the carbon dioxide gas escaping very slowly from the supersaturated liquid. This process is speeded up by the presence of nucleation sites within the solution, such as small bubbles, caused by shaking the bottle vigorously.
In air that is normally supersaturated, tiny water droplets may be allowed to precipitate upon being disturbed naturally. You can see this when the head of a pint of Guinness is formed. Other formulas that you must take into account regarding supersaturated solutions of sugar and water include the mixture which is mainly used to produce rock candy.

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