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Solubility rules - Negative Ions(Anions any anion any anion...

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Negative Ions (Anions) + Positive Ions (Cations) = Solubility of compounds in water Example any anion + alkali ions (Li + ,Na + ,K + ,Rb + ,Cs + ,Fr + ) = soluble sodium fluoride, NaF, is soluble any anion + hydrogen ion [H + (aq) ] = soluble hydrogen chloride, HCl, is soluble any anion + amonium ion (NH 4 + ) = soluble ammonium chloride, NH 4 Cl, is soluble nitrate NO 3 - + any cation = soluble potassium nitrate, KNO 3 , is soluble acetate (CH 3 COO - ) + any cation = soluble sodium acetate, CH 3 COONa, is soluble + silver (Ag + ), lead (Pb 2+ ), mercury (Hg 2+ ), copper (Cu + ), thallium (Tl + ) = low solubility (insoluble) silver chloride, AgCl, forms a white precipitate (a white solid) Chloride (Cl - ), Bromide (Br - ), Iodide (I - ) + any other cation = soluble potassium bromide, KBr, is soluble + calcium (Ca 2+ ), strontium (Sr 2+ ), barium (Ba 2+ ), silver (Ag + ), lead (Pb 2+ ), radium (Ra 2+ ) = low solubility (insoluble) barium sulphate, BaSO 4 , forms a white precipitate (a white solid) Sulphate (SO 4 2- ) + any other cation = soluble copper sulphate, CuSO 4 , is soluble + alkali ions (Li + ,Na + ,K + ,Rb + ,Cs + ,Fr + ), alkali earth metals (Be 2+ ,Mg 2+ ,Ca 2+ ,Sr 2+ ,Ba 2+ ,Ra 2+ ), and H + (aq) , NH
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