Multiple Choice
Which of the following compounds is soluble in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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In the context of solubility rules, what does it mean when a substance is described as 'soluble' in water?
A
It reacts with water to produce a gas.
B
It forms a precipitate when mixed with water.
C
It dissolves completely in water to form a homogeneous solution.
D
It does not dissolve in water and remains as a solid.
Verified step by step guidance1
Understand that solubility refers to the ability of a substance to dissolve in a solvent, in this case, water.
Recognize that when a substance is described as 'soluble' in water, it means it can dissolve to a significant extent, forming a uniform mixture called a homogeneous solution.
Note that solubility does not imply a chemical reaction with water, such as producing a gas or forming a precipitate; rather, it is a physical process of dissolution.
Recall that a precipitate is an insoluble solid that forms when two solutions react, which is the opposite of being soluble.
Therefore, 'soluble' means the substance dissolves completely in water, resulting in a clear, uniform solution without any solid residue.
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