net-ionic-equations

net-ionic-equations - PO43 S2 3Cl 2Ca 2+ Na+ Al3+ Net ionic...

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Net ionic equations Na + Al 3+ S 2– 2Ca 2+ PO 4 3– 3Cl
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Review: forming ions Ionic (i.e. salt) refers to +ve ion plus -ve ion Usually this is a metal + non-metal or metal + polyatomic ion (e.g. NaCl, NaClO 3 , Li 2 CO 3 ) Polyatomic ions are listed on page 95 (aq) means aqueous (dissolved in water) For salts (aq) means the salt exists as ions NaCl(aq) is the same as: Na + (aq) + Cl (aq) Acids form ions: HCl(aq) is H + (aq) + Cl (aq), Bases form ions: NaOH(aq) is Na + + OH Q - how is charge determined (+1, -1, +2, etc.)? A - via valences (periodic table or see pg. 95) F, Cl gain one electron, thus forming F , Cl Ca loses two electrons, thus forming Ca 2+
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Charge can also be found via the compound E.g. in NaNO 3 (aq) if you know Na forms Na + , then NO 3 must be NO 3 (NaNO 3 is neutral) By knowing the valence of one element you can often determine the other valences Q - Write the ions that form from Al 2 (SO 4 ) 3
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This note was uploaded on 11/09/2011 for the course CHEM 110 taught by Professor Sullivan during the Fall '10 term at BYU.

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net-ionic-equations - PO43 S2 3Cl 2Ca 2+ Na+ Al3+ Net ionic...

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