Chemistry Solubility Rules
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23 Terms
1
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Nitrates (NO₃⁻)
Always soluble (NAG SAG)
2
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Acetates (C₂H₃O₂⁻)
Always soluble (NAG SAG)
3
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Group 1 (Li⁺, Na⁺, K⁺, etc.)
Always soluble (NAG SAG)
4
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Sulfates (SO₄²⁻)
Soluble except PMS & Castro Bear
5
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Ammonium (NH₄⁺)
Always soluble (NAG SAG)
6
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Group 17 (Cl⁻, Br⁻, I⁻)
Soluble except PMS
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8
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PMS (Insoluble exceptions for Sulfates & Group 17)
9
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P - Lead (Pb²⁺)
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M - Mercury (Hg₂²⁺)
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S - Silver (Ag⁺)
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13
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Castro Bear (Insoluble exceptions for Sulfates)
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Ca - Calcium (Ca²⁺)
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Sr - Strontium (Sr²⁺)
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Ba - Barium (Ba²⁺)
17
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18
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Carbonates (CO₃²⁻) & Phosphates (PO₄³⁻)
Insoluble except NH₄⁺ & Group 1
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Metallic Oxides (O²⁻)
Insoluble except NH₄⁺ & Group 1
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Hydroxides (OH⁻)
Insoluble except NH₄⁺, Group 1, & Group 2 from Ca²⁺ down
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Sulfides (S²⁻)
Insoluble except NH₄⁺, Group 1, & Group 2
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Fluorides (F⁻)
Insoluble except NH₄⁺ & Group 1
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Note 
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