Multiple Choice
Which of the following statements best describes a supersaturated solution?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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According to solubility rules, which of the following best describes what happens when a salt dissolves completely in water?
A
The salt forms a suspension with visible particles.
B
The salt dissociates into its constituent ions, forming a homogeneous solution.
C
The salt remains as a solid at the bottom of the container.
D
The salt reacts with water to form a new compound.
Verified step by step guidance1
Understand that when a salt dissolves completely in water, it undergoes a physical process called dissociation, where the solid ionic compound separates into its individual ions.
Recall that solubility rules help predict whether a salt will dissolve in water and to what extent, but complete dissolution means the salt breaks apart into ions rather than remaining as solid particles.
Recognize that a suspension involves visible particles dispersed in a liquid, which is not the case for a salt that dissolves completely; instead, the solution is homogeneous and clear.
Note that if the salt remained as a solid at the bottom, it would be considered insoluble or only sparingly soluble, which contradicts the condition of complete dissolution.
Understand that dissolving does not necessarily mean a chemical reaction with water occurs; rather, the salt dissociates into ions without forming new compounds, resulting in a homogeneous ionic solution.
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