Multiple Choice
According to common solubility rules, which of the following compounds is generally 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 according to general solubility rules?
A
NaNO_3
B
PbI_2
C
BaSO_4
D
AgCl
Verified step by step guidance1
Recall the general solubility rules for ionic compounds in water, which help predict whether a compound will dissolve or remain mostly solid.
Identify that compounds containing alkali metal ions (like Na\^+) and nitrate ions (NO_3\^-) are generally soluble in water without exceptions.
Examine the other compounds: PbI_2, BaSO_4, and AgCl, which are known to be sparingly soluble or insoluble due to the presence of heavy metal cations and halide or sulfate anions that tend to form precipitates.
Apply the solubility rules: NaNO_3 contains Na\^+ (alkali metal) and NO_3\^- (nitrate), both of which confer high solubility, so NaNO_3 is soluble in water.
Conclude that among the given options, NaNO_3 is the compound soluble in water according to the general solubility rules.
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