Multiple Choice
According to common solubility rules, which of the following groups of compounds is generally insoluble in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which one of the following ions would NOT form a precipitate when mixed with Ag^+ in aqueous solution?
A
NO_3^−
B
Cl^−
C
Br^−
D
CO_3^{2−}
Verified step by step guidance1
Identify the common ions that form precipitates with Ag^+ (silver ion) in aqueous solution. Silver ions typically form insoluble salts with halides (Cl^-, Br^-) and some other anions like CO_3^{2-}.
Recall the solubility rules: Nitrate ions (NO_3^-) generally form soluble salts with almost all cations, including Ag^+, meaning no precipitate forms.
Check the solubility of silver halides: AgCl and AgBr are known to be insoluble or sparingly soluble, so they form precipitates.
Consider silver carbonate (Ag_2CO_3): Carbonate salts with silver are usually insoluble, so Ag_2CO_3 will precipitate.
Conclude that among the given ions, NO_3^- does not form a precipitate with Ag^+ because silver nitrate is soluble in water.
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