Multiple Choice
Which of the following best describes a supersaturated solution?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Under which of the following conditions will sugar most likely dissolve fastest in a cup of water?
A
Adding sugar to water and sealing the cup without stirring
B
Using cold water and leaving the solution undisturbed
C
Using hot water but not stirring the solution
D
Stirring the solution and using hot water
Verified step by step guidance1
Understand that the rate at which sugar dissolves in water depends on factors such as temperature, stirring, and surface area.
Recognize that increasing the temperature of the water increases the kinetic energy of water molecules, which helps sugar molecules break apart and disperse faster.
Know that stirring the solution physically moves the water and sugar molecules around, increasing the interaction between them and preventing saturation near the sugar surface.
Compare the given conditions: adding sugar without stirring, using cold water, and using hot water without stirring, and see how each affects the dissolution rate.
Conclude that the fastest dissolution occurs when both stirring and hot water are used together, as stirring enhances mixing and hot water increases molecular motion.
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