Multiple Choice
Which of the following compounds is NOT soluble in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which of the following compounds will dissolve in water?
A
PbSO_4
B
BaSO_4
C
AgCl
D
NaNO_3
Verified step by step guidance1
Step 1: Understand the concept of solubility in water, which depends on the compound's ability to dissociate into ions and interact with water molecules. Generally, ionic compounds with highly soluble ions dissolve well in water.
Step 2: Recall the solubility rules for common ionic compounds: most nitrates (NO_3^-) are soluble, most sulfates (SO_4^{2-}) are soluble except those of Pb^{2+} and Ba^{2+}, and most chlorides (Cl^-) are soluble except those of Ag^+ and Pb^{2+}.
Step 3: Analyze each compound based on these rules: PbSO_4 and BaSO_4 are sulfates that are generally insoluble, AgCl is a chloride that is generally insoluble, and NaNO_3 is a nitrate which is highly soluble in water.
Step 4: Conclude that NaNO_3 will dissolve in water because nitrates are soluble, while PbSO_4, BaSO_4, and AgCl are mostly insoluble due to their specific cations.
Step 5: Summarize that the solubility rules help predict which compounds dissolve in water without performing experimental tests.
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