Multiple Choice
Which statement best describes the difference between a saturated and an unsaturated solution?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which of the following compounds is NOT soluble in water at room temperature?
A
NaNO_3
B
NH_4Br
C
AgCl
D
K_2SO_4
Verified step by step guidance1
Recall the general solubility rules for ionic compounds in water at room temperature. These rules help predict whether a compound will dissolve in water.
Identify the solubility of each compound based on these rules:
- Compounds containing alkali metal ions (like Na\textsuperscript{+} and K\textsuperscript{+}) and the ammonium ion (NH\textsubscript{4}\textsuperscript{+}) are generally soluble.
- Nitrates (NO\textsubscript{3}\textsuperscript{−}) and bromides (Br\textsuperscript{−}) are also typically soluble.
Check the solubility of silver chloride (AgCl). According to solubility rules, most silver salts are insoluble except for a few exceptions, and AgCl is known to be poorly soluble in water.
Compare the solubility of AgCl with the other compounds (NaNO\textsubscript{3}, NH\textsubscript{4}Br, K\textsubscript{2}SO\textsubscript{4}). Since AgCl is the only compound that is not soluble, it is the correct answer.
Summarize that AgCl is the compound that is NOT soluble in water at room temperature based on the solubility rules.
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