Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! Guidelines or solubility rules to predict whether or not a given ionic compound is soluble in water at room temperature.
See also Solutions, molarity and dilution and Solubility product constants
Ionic Compounds in Water - Usually Soluble Usually Soluble Exceptions Acetates CH 3COO - Moderately soluble: CH 3COOAg Ammonium NH 4 + Chlorates ClO 3 - Perchlorates ClO 4 - Group 1 cations Li + Na + K + Rb + Cs + Halides F - Insoluble: MgF 2, CaF 2, SrF 2, BaF 2, PbF 2 Cl - Insoluble: AgCl, Hg 2Cl 2, PbCl 2, Br - Insoluble: AgBr, Hg 2Br 2, PbBr 2, I - Insoluble: AgI, Hg 2I 2, PbI 2, Nitrates NO 3 - Nitrites NO 2 - Moderately soluble: AgNO 2 Sulfates SO 4 2-
Moderate soluble: CaSO 4, SrSO 4, Ag 2SO 4
Insoluble: BaSO 4, PbSO 4, HgSO 4
Ionic Compounds in Water - Usually Insoluble Usually Insoluble Exceptions Carbonates CO 3 2- Soluble: (NH 4) 2CO 3, Na 2CO 3, K 2CO 3 Hydroxides OH -
Soluble: LiOH, NaOH, KOH, Ba(OH) 2
Moderately soluble: Ca(OH) 2, Sr(OH) 2 Phosphates PO 4 3- Soluble: (NH 4) 3PO 4, Na 3PO 4, K 3PO 4 Sulfides S 2- Soluble: (NH 4) 2S, Na 2S, K 2S, MgS, CaS Related Topics The study of fluids - liquids and gases. Involving velocity, pressure, density and temperature as functions of space and time. Material properties of gases, fluids and solids - densities, specific heats, viscosities and more. Related Documents Mixtures vs. solutions vs. suspensions. Rules for naming inorganic ionic and covalent types of chemical compounds. Salinity - salt content - of fresh, brackish and sea water. The amount of a solute that can be dissolved in a solvent. Solubility of Ammonia, Argon, Carbon Dioxide, Carbon Monoxide, Chlorine, Ethane, Ethylene, Helium, Hydrogen, Hydrogen Sulfide, Methane, Nitrogen, Oxygen and Sulfur Dioxide in water. The equilibrium constant, Ksp, for aqueous solutions of ionic compounds at 25°C. Definitions and examples of how to calculate wt%, molarity and how to prepare dilutions. Solubility of sugar in water.
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