Multiple Choice
Which combination of aqueous solutions should produce a precipitate?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which of the following best describes what happens when a solid is soluble in a liquid?
A
The solid settles at the bottom, forming a heterogeneous mixture.
B
The solid floats on the surface of the liquid without dissolving.
C
The solid dissolves completely, forming a homogeneous solution.
D
The solid reacts with the liquid to produce a gas.
Verified step by step guidance1
Understand the concept of solubility: When a solid is soluble in a liquid, it means the solid can dissolve in the liquid to form a uniform mixture at the molecular or ionic level.
Recognize the difference between heterogeneous and homogeneous mixtures: A heterogeneous mixture has visibly different parts (like solid particles settling), while a homogeneous mixture has a uniform composition throughout.
Identify what happens when a solid dissolves: The solid breaks down into its individual particles and disperses evenly throughout the liquid, resulting in a homogeneous solution.
Eliminate options that describe physical separation or reactions: Settling at the bottom or floating indicates no dissolution, and producing a gas implies a chemical reaction, not simple solubility.
Conclude that the correct description is the solid dissolving completely, forming a homogeneous solution, because this matches the definition of solubility in liquids.
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