Polyatomics-Solubility

Polyatomics-Solubility - one 1 two 2s three 3s four 4s (two...

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Common Polyatomic Ions and Solubility Rules Chem 1A – Fassler Cation: NH 4 + ammonium Anions: CH 3 CO 2 acetate NO 2 nitrite CN cyanide NO 3 nitrate OH hydroxide O 2 2– peroxide SO 3 2– sulfite CO 3 2– carbonate SO 4 2– sulfate HCO 3 hydrogen carbonate HSO 4 hydrogen sulfate (bicarbonate) (bisulfate) PO 4 3– phosphate ClO hypochlorite HPO 4 2– hydrogen phosphate ClO 2 chlorite H 2 PO 4 dihydrogen phosphate ClO 3 chlorate (compare to nitrate) ClO 4 perchlorate MnO 4 permanganate (deep purple) CrO 4 2– chromate (compare to sulfate) Cr 2 O 7 2– dichromate (bright yellow) Polyatomic Mnemonic: NO COla or SOda POp…
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Unformatted text preview: one 1 two 2s three 3s four 4s (two extras) NO 3 1 CO 3 2 SO 4 2 PO 4 3 Solubility Rules Always soluble (no exceptions): Salts containing Li + , Na + , K + , NH 4 + , CH 3 CO 2 or NO 3 Usually soluble: Cl , Br , I salts, except insoluble with Ag + , Pb 2+ or Hg 2 2+ SO 4 2 salts, except insoluble with Ag + , Pb 2+ , Hg 2 2+ , Ca 2+ , Sr 2+ or Ba 2+ Usually insoluble (still soluble with Li + , Na + , K + or NH 4 + ): CO 3 2 and PO 4 3 salts S 2 and OH , salts, except soluble with Ca 2+ , Sr 2+ or Ba 2+...
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