Multiple Choice
Based on common solubility rules, which compound is most likely to be soluble in water?
7. Chemical Reactions
Solubility Rules
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Based on common solubility rules, which compound is insoluble in water at room temperature?
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Verified step by step guidance1
Identify the ions present in each compound: AgCl contains Ag⁺ and Cl⁻; K₂CO₃ contains K⁺ and CO₃²⁻; Na₂SO₄ contains Na⁺ and SO₄²⁻; NH₄NO₃ contains NH₄⁺ and NO₃⁻.
Recall the common solubility rules: most compounds containing alkali metal ions (like K⁺ and Na⁺) and the ammonium ion (NH₄⁺) are soluble in water.
Note that nitrates (NO₃⁻) are generally soluble, so NH₄NO₃ is soluble.
Recognize that most carbonates (CO₃²⁻) are insoluble except those with alkali metals and ammonium, so K₂CO₃ is soluble.
Understand that silver chloride (AgCl) is a classic example of an insoluble salt in water at room temperature due to the low solubility of silver halides.
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