Multiple Choice
Which one of the following compounds is the most soluble in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which of the following methods can change a saturated solution of sugar and water into a supersaturated solution?
A
Filter out some of the dissolved sugar from the solution.
B
Heat the solution to dissolve more sugar, then cool it slowly without disturbing.
C
Add a seed crystal of sugar to the solution.
D
Add more water to the solution.
Verified step by step guidance1
Understand what a saturated solution is: it contains the maximum amount of solute (sugar) dissolved in the solvent (water) at a given temperature.
Recognize that a supersaturated solution contains more dissolved solute than a saturated solution at the same temperature, which is usually achieved by changing temperature conditions.
To create a supersaturated solution, heat the saturated solution to increase the solubility of sugar, allowing more sugar to dissolve.
Then, cool the solution slowly without disturbing it, so the excess sugar remains dissolved temporarily, forming a supersaturated solution.
Note that filtering out dissolved sugar, adding seed crystals, or adding more water will not create a supersaturated solution; instead, they either remove solute, cause crystallization, or dilute the solution.
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