Chapter 7 Chemistry Notes

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Unformatted text preview: reaction by what the (Except Li Na , K , NH , H there is a double displacement (the ion partners ,exchange). ) S2- (except Group 2A) + NO3- + + 4 + + OH- (slightly soluble Group 2A) CO32- , PO43-b Pb(NO3)2(aq) + 2 KI(aq) 2 PbI2(s) + 2 KNO3 (aq) I- The end result is obtained by exchanging the anions. Examples: NaCl(aq) + AgNO3(aq) NaCl(aq) + KNO3(aq) FeCl3(aq) + 3 NaOH(aq) BaCl2(aq) + Na2SO4(aq) MasteringChem suggestion write it then type it 5 9/27/2013 Acid-Base Reactions Write net ionic equation Molecular style from before: Types of Reactions: (by types of chemistry) NaCl(aq) + AgNO3(aq) NaNO3(aq) + AgCl(s) 1. • • NaCl(aq) + KNO3(aq) noreaction 2. • FeCl3(aq) + 3 NaOH(aq) Fe(OH)3(s) + 3 NaCl(aq) 3. • BaCl2(aq) + Na2SO4(aq) BaSO4(s) + 2 NaCl(aq) 4. An acid (for now) is a substance that when it dissolves in water it has a chemical tendency to form H+. (Chemical formula starts with H). A base (for now) is a substance that reacts with H+ (often will have OH- as an anion.) Net ionic (check if each ion changes states): 1. 2. 3. 4. General Acid-Base Reaction (chemical change): Acid + Base Water + Salt For example: HCl(aq) + NaOH(aq) H2O (ℓ) + NaCl(aq) Water + Salt + Base H2SO4 (aq) + NaOH(aq) Acids HCl HNO3 H2SO4 H3PO4 H2CO3 HC2H3O2 Bases NaOH LiOH KOH Ca(OH)2 Ba(OH)2 NH3 Gas Producing/ Acid-Base Reactions Examples of Acid-Base Reactions Acid Precipitation √ Acid-Base (H+, OH-) ◄ Gas Evolution (Bubbles) Oxidation-Reduction (Redox, electrons) Acids HCl HNO3 H2SO4 H2CO3 H3PO4 HC2H3O2 Bases NaOH LiOH KOH Ca(OH)2 Ba(OH)2 Types of Reactions: (by types of chemistry) • • • • H2O(l) + NaHSO4(aq) Precipitation & Solubility √ Acid-Base (H+, OH-) ◄ Gas Evolution (Bubbles) ◄ Oxidation-Reduction (Redox, electrons) Acids HCl HNO3 H2SO4 H3PO4 H2CO3 HC2H3O2 For example: NaHSO4 (aq) + NaOH(aq) H2O(l) + Na2SO4(aq) Bases NaOH LiOH KOH Ca(OH)2 Ba(OH)2 HC2H3O2 (aq) + NaHCO3(aq) H2O (ℓ) + CO2 (g) + NaC2H3O2 (aq) + baking soda Water + gas H2SO4 (aq) + 2 NaOH(aq) 2H2O(l) + Na2SO4(aq) vinegar Your turn: Others: given in table 7.4 p. 218. Memorize: H2CO3 (aq) H2O (ℓ) + CO2 (g) (carbon dioxide) And NH4OH (aq) H2O (ℓ) + NH3 (g) (ammonia) 2 HNO3 (aq) + Ba(OH)2(aq) + salt (Notice similarity to double displacement reactions) Acid-Base Gas Forming Reactions The Chemistry of Antacids Antacids: Milk of Magnesia: Mg(OH)2 Tums: CaCO3 Mylanta: Al(OH)3 Stomach Acid: HCl Reactant type Reacting with Ion exchange product Decompose? Gas formed Example MetalnS, Metal HS- Acid H 2S No H 2S K2S(aq) + 2HCl(aq) → 2KCl(aq) + H2S(g) MetalnCO3, Metal HCO3- Acid H2CO3 Yes CO2 K2CO3(aq) + 2HCl(aq) → 2KCl(aq) + CO2(g) + H2O(l) Milk of Magnesia 2 HCl(aq) + Mg(OH)2(s) 2 H2O(l) + MgCl2(aq) Acid + Base Water + Salt MetalnSO3 Metal HSO3- Acid H2SO3 Yes SO2 K2SO3(aq) + 2HCl(aq) → 2KCl(aq) + SO2(g) + H2O(l) Tums (NH4)nanion Base NH4OH Yes NH3 KOH(aq) + NH4Cl(aq) → KCl(aq) + NH3(g) + H2O(l) HC2H3O2 (aq) + NaHCO3(aq) H2CO3 (aq) + NaC2H3O2 (aq) H2CO3 (aq) H2O (ℓ) + CO2 (g) 2 HCl(aq) + CaCO3(s) 2 H2O(l) + CaCl2 (aq) + CO2 (g) Acid + Base Water + salt + gas Mylanta 3 HCl(aq) + Al(OH)3(s) 3 H2O(l) + AlCl3 (aq) Acid + Base Water + Salt 6 9/27/2013 Chapter 7 to do list Combining Reaction Types Acids HCl HNO3 H2SO4 H2CO3 H3PO4 HC2H3O2 Bases NaOH LiOH KOH Ca(OH)2 Ba(OH)2 Soluble Li+, Na+, K+, NH4+ NO3-, C2H3O2Cl-, Br-, I- (except Hg22+, Ag+, Pb2+) SO42(except Group 2A & Pb2+) Mostly Insoluble (Except Li+, Na+, K+, NH4+, H+) S2- (except Group 2A) OH- (slightly...
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This note was uploaded on 02/04/2014 for the course CHEM 004:007 taught by Professor Russellarsen during the Fall '13 term at University of Iowa.

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