Solubility Rules Interactive Guide
Always Soluble Compounds
- Group 1 metals (Li⁺, Na⁺, K⁺, Rb⁺, Cs⁺)
- Ammonium ion (NH₄⁺)
- Nitrates (NO₃⁻)
- Perchlorates (ClO₄⁻)
- Acetates (CH₃CO₂⁻)
Mostly Soluble Compounds (with exceptions)
Halides (Cl⁻, Br⁻, I⁻)
Exceptions (insoluble):
- Ag⁺ compounds
- Pb²⁺ compounds
- Hg₂²⁺ compounds
Sulfates (SO₄²⁻)
Exceptions (insoluble):
- Sr²⁺ compounds
- Ba²⁺ compounds
- Pb²⁺ compounds
- Ca²⁺ (slightly soluble)
Generally Insoluble Compounds
Hydroxides (OH⁻) and Sulfides (S²⁻)
Exceptions (soluble):
- Group 1 metal compounds
- Ammonium compounds
- Alkaline earth sulfides
Carbonates (CO₃²⁻) and Phosphates (PO₄³⁻)
Exceptions (soluble):
- Group 1 metal compounds
- Ammonium compounds
Interactive Solubility Predictor
Try predicting if a compound will be soluble!