Multiple Choice
Which of the following compounds is most soluble in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
Multiple Choice
Which of the following compounds cannot have its solubility predicted using standard solubility rules?
A
AgNO_3
B
NaCl
C
BaSO_4
D
C_6H_{12}O_6 (glucose)
Verified step by step guidance1
Step 1: Understand what standard solubility rules are. These rules help predict whether an ionic compound will dissolve in water based on the ions it contains.
Step 2: Identify the nature of each compound given: AgNO_3, NaCl, BaSO_4, and C_6H_{12}O_6 (glucose). The first three are ionic compounds, while glucose is a molecular (covalent) compound.
Step 3: Recall that standard solubility rules apply primarily to ionic compounds because they involve the dissociation of ions in water. For example, NaCl dissociates into Na^+ and Cl^-, and BaSO_4 dissociates into Ba^{2+} and SO_4^{2-}.
Step 4: Recognize that glucose (C_6H_{12}O_6) is a covalent molecule that dissolves by forming hydrogen bonds with water, not by ionic dissociation. Therefore, its solubility cannot be predicted by ionic solubility rules.
Step 5: Conclude that among the given compounds, glucose is the one whose solubility cannot be predicted using standard solubility rules because it is not an ionic compound.
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