Multiple Choice
Which of the following barium salts is insoluble in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which of the following compounds is soluble in water?
A
PbSO_4
B
NaNO_3
C
AgCl
D
BaSO_4
Verified step by step guidance1
Recall the general solubility rules for ionic compounds in water, which help predict whether a compound will dissolve.
Identify that most nitrates (NO_3^-) are soluble in water without exceptions, so NaNO_3 is expected to be soluble.
Recognize that sulfates (SO_4^{2-}) are generally soluble except when paired with Pb^{2+}, Ba^{2+}, or Ca^{2+}, making PbSO_4 and BaSO_4 mostly insoluble.
Note that most chlorides (Cl^-) are soluble except those of Ag^+, Pb^{2+}, and Hg_2^{2+}, so AgCl is generally insoluble.
Conclude that among the given compounds, NaNO_3 is soluble in water based on these solubility rules.
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