Chapter_5 Sep_21 Lecture_14.pptx

2 the ion with one less o atom than the ate ion is

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2) The ion with one less O atom than the ate ion is called the – ite . Thus, ClO 2 - is the chlorite ion . 3) The ion with two fewer O atom than the ate ion is called the hypo…ite ion. Thus, ClO - is the hypochlorite ion .
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Common Polyatomic Ions carbonate CO 3 2- phosphate PO 4 3- sulfate SO 4 2- + H + HCO 3 Bicarbonate or hydrogen carbonate + H + HSO 4 Bisulfate or hydrogen sulfate + H + HPO 4 2- + H + H 2 PO 4 hydrogen phosphate dihydrogen phosphate
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Formulas of Ionic Compounds Ionic compounds are electronically neutral. The sum of the charges on the cation and anion in each formula must be zero. Barium sulfate Ba 2+ SO 4 2- BaSO 4 Potassium permanganate K + MnO 4 - KMnO 4 Sodium hydroxide Na + OH - NaOH Just combine the cation and anion when the charges are numerically equal
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Formulas of Ionic Compounds Sum of charges: 2(+3) + 3(–2) = 0 subscript for cation = charge on anion subscript for anion = charge on cation Use parentheses and subscript to indicate number of polyatomic ions Ca 2+ PO 4 3– Ca 3 (PO 4 ) 2 Calcium phosphate Ca 2+ PO 4 3- Aluminum nitrite Al 3+ NO 2 Al(NO 2 ) 3 Ammonium carbonate NH 4 + CO 3 2- (NH 4 ) 2 CO 3
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Let’s Try These Name the following ionic compounds: (a) MgSO 4 Magnesium sulfate (b) Fe
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  • Fall '16
  • hawk
  • Ion, Sulfuric acid, Polyatomic ion

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