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lect_15oct31f08 - Outline 15 31-OCT-2008 Review Will Rxn...

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1 Outline 15 31-OCT-2008 1. Review - Will Rxn Occur? Net ionic eqn.? Pptn (Soluble)? Acid-Base (Strong)? 2. Ion Stoichiometry – (review) 3. Acid-Base Theory - Brønsted –Lowrey acid is proton donor (same as Arrhenius) base is proton acceptor 4. Redox - (Oxidation-Reduction) Oxidation Numbers
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2 Chemical Reaction Types (review) 1.Exchange (metathesis)? A. Precipitation (Insoluble ion combination)? B. Neutralization (acid-base)? 2. Redox O.N. changes
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3 Solubility Rules (“common” Ionic Compounds) [‘ordinary’ temperatures] (Follow sequence* ) AGAIN! A. Soluble 1. Group IA and NH 4 + 2. NO 3 - ,C 2 H 3 O 2 - , ClO 4 - (most), ClO 3 - B. Mostly Soluble 1. (Cl - , Br - , I - ) (except Ag + , Pb 2+ , Hg 2 2+ ,Cu + ) F - (except Pb +2 and group 2A). Group 7A (halides). 2. SO 4 2- (except Ag + , Pb 2+ , group 2A Ca +2 and down) C. Insoluble 1. PO 4 3- , CO 3 2- , O 2- , S 2- (except 2A), OH - (except group 2A, Ca +2 and down) *Earlier ‘Rules’ trump later ones. Print this slide and use in homework.
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4 Strong Acid & Base Identification; AGAIN! A. Strong Acids (FEW so can learn easily through using). HNO 3 , HClO 4 , HClO 3 , H 2 SO 4 (first H strong) Oxoacids in general, H x AO y , strong if y ≥ (x+2) HCl, HBr, HI (Group VII A [not HF]) B. Strong Bases Hydroxides of Group 1A and IIA (not Be) Print this slide and use in problem solving.
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5 Acid-Base Classification (review) Classify (acid or base, strong or weak) and name (a) HBrO (aq) (b) HCNO (cyanic acid, classify only) (c) Sr(OH) 2 (d) HI
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6 Name________Quiz 14 TA Name______ (or dis.sec._____) 1. (3) Classify following as to soluble or insoluble. a. BaCO 3 b. Na 2 CO 3 c. Fe(NO 3 ) 3 2. (2) Classify following as to acid, base, weak, strong.
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