As temperature rises, solids generally become more soluble in water, but gases become less soluble. If a soft drink contains high concentrations of sugar and carbon dioxide, which of the following may be expected to happen if it is cooled down? A) Sugar may precipitate out. B) Gas bubbles may form and produce foam. C) Water may evaporate rapidly.
To determine what may happen if a soft drink with high concentrations of sugar and carbon dioxide is cooled down, we need to consider the solubility of solids (sugar) and gases (carbon dioxide) in water at different temperatures.
As temperature decreases, the solubility of most solids generally increases. This means that cooling down the soft drink may cause the sugar to become less soluble, potentially leading to the sugar precipitating out of the solution. So option A) "Sugar may precipitate out" is a possible outcome.
On the other hand, the solubility of gases generally decreases as temperature decreases. This means that cooling down the soft drink may cause the carbon dioxide gas to become less soluble, resulting in gas bubbles forming and producing foam. Therefore, option B) "Gas bubbles may form and produce foam" is also a possible outcome.
Regarding option C) "Water may evaporate rapidly", cooling down the soft drink would actually slow down the rate of evaporation since lower temperatures restrict the movement of water molecules necessary for evaporation. Therefore, option C) is unlikely to happen.
In summary, both options A) and B) are possible outcomes when a soft drink with high concentrations of sugar and carbon dioxide is cooled down.