pH of salt soln by identifying predominant hydrolysis rxn 21) Buffer Tendency to Resist pH Changes May 29-30th Procedure to prepare a buffer soln Acid Bkt p.13 Acidic and basic buffers: composition Prov Bkt #16 With adding small amounts of strong acid or base Description of buffer eqm shifts with addding small amount of acid or base where stress is the change in [H3O+] or [OH-] Limitations of buffering action Common buffer system ex: blood 22) Metal and Non-Metal Oxides May 31st WS 4-6 p.18-20 Eqns showing formation of acidic or basic solns Prov Bkt #17 pH of normal rain due to dissolved CO2 (pH 5.6) Study Guide: Acid Bkt p.23-5 pH conditions for acid rain (pH<5.0) General environmental problems: Sources of NOx (automobile engines), SOx (fuels with sulfur and smelters of sulfide ores) Test-Acid/Base:Mon Jun 5th Unit 5: Electrochemistry Jun 1st Hebden: Unit 5 1)Copper Strips in HCl (conc) and in HNO3 (conc) Unit 5 p.2-3, 6-10 Voltaic cell demo, Salt Bridge Set Up Electro Bkt p.3, 7 Copper coil in AgNO3 Prov Bkt # 3 Define and identify: oxidation, reduction, oxidizing agent, reducing agent, half-rxn, redox rxn 2) Oxidation Number of an Atom in Chemical Species Unit 5 p.3-6 Demo : several oxidations of manganese Electro Bkt p.4-5 Change in oxidation number when atom becomes Prov Bkt # 2 oxidized or reduced Oxidation number: gain or loss of electrons 3) Create Simple Table of Reduction Half-Rxns Jun 2nd Unit 5 p.11-12, 26 Using data for series of simple redox rxns Prov Bkt #5 Identify relative strengths of oxidizing and reducing agents From their positions on half-rxn table 4) Use Standard Reduction Potentials of Half-Cells Table Predict Electro Bkt p.8, 13-16 spontaneity of redox rxn between 2 species Prov Bkt # 6 5) Balance Eqn for Half-Rxn in Solns that: Jun 6th Electro Bkt p. 9-13
pH of salt soln by identifying predominant hydrolysis rxn 21) Buffer Tendency to Resist pH Changes May 29-30th Procedure to prepare a buffer soln Acidic and basic buffers: composition With adding small amounts of strong acid or base Description of buffer eqm shifts with addding small amount of acid or base where stress is the change in [H3O+] or [OH-] Limitations of buffering action Common buffer system ex: blood 22) Metal and Non-Metal Oxides May 31st Eqns showing formation of acidic or basic solns pH of normal rain due to dissolved CO2 (pH 5.6) pH conditions for acid rain (pH<5.0) General environmental problems: Sources of NOx (automobile engines), SOx (fuels with sulfur and smelters of sulfide ores) Acid Bkt p.13 Prov Bkt #16 WS 4-6 p.18-20 Prov Bkt #17 Study Guide: Acid Bkt p.23-5 Test-Acid/Base:Mon Jun 5th Unit 5: Electrochemistry Jun 1st 1)Copper Strips in HCl (conc) and in HNO3 (conc) Voltaic cell demo, Salt Bridge Set Up Copper coil in AgNO3 Define and identify: oxidation, reduction, oxidizing agent, reducing agent, half-rxn, redox rxn 2) Oxidation Number of an Atom in Chemical Species Demo : several oxidations of manganese Change in oxidation number when atom becomes oxidized or reduced Oxidation number: gain or loss of electrons 3) Create Simple Table of Reduction Half-Rxns Jun 2nd Using data for series of simple redox rxns Identify relative strengths of oxidizing and reducing agents From their positions on half-rxn table 4) Use Standard Reduction Potentials of Half-Cells Table Predict spontaneity of redox rxn between 2 species 5) Balance Eqn for Half-Rxn in Solns that: Jun 6th Hebden: Unit 5 Unit 5 p.2-3, 6-10 Electro Bkt p.3, 7 Prov Bkt # 3 Unit 5 p.3-6 Electro Bkt p.4-5 Prov Bkt # 2 Unit 5 p.11-12, 26 Prov Bkt #5 Electro Bkt p.8, 13-16 Prov Bkt # 6 Electro Bkt p. 9-13
ch_12_unit_plan-s2-2017.docx