Multiple Choice
Which statement best describes how the solubility of NaCl is affected by the choice of solvent?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which of the following is NOT a way to increase the rate at which a solute dissolves in a solvent?
A
Heating the solvent
B
Decreasing the temperature of the solvent
C
Stirring the solution
D
Increasing the surface area of the solute
Verified step by step guidance1
Understand that the rate of dissolution depends on factors that increase the interaction between solute and solvent particles.
Recognize that heating the solvent generally increases the kinetic energy of molecules, leading to faster dissolution.
Know that stirring the solution helps distribute solute particles throughout the solvent, increasing the rate of dissolution.
Realize that increasing the surface area of the solute (e.g., by crushing it) exposes more particles to the solvent, speeding up dissolution.
Identify that decreasing the temperature of the solvent reduces molecular motion, which slows down the rate of dissolution, so it is NOT a way to increase the rate.
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