Unit 6: Qualitative Analysis with Acids and Bases

During this unit we will be working on lab qualitative analysis of unknown solutions as we further studies on solutions, acid and base reactions, nomenclature and stoichiometry (problem solving). This extended and active lab will summarize many of the reaction types we have studied this year and will increase student analytical skills. Study all of Chapter 15 and complete chapter review problems 1 to 31 odd and all of Chapter 16 and complete chapter review problems 1 to 25 odd. There will be quizzes throughout this unit, on reagent names and acid and bases. First unit quiz will be on 4/26.

Essential Ideas: Many reactions involve the transfer of a proton from an acid to a base. The characterization of an acid depends on empirical evidence such as the production of gases in reactions with metals, the color changes of indicators or the release of heat in reactions with metal oxides and hydroxides. The pH scale is an artificial scale used to distinguish between acid, neutral and basic/alkaline solutions. The pH depends on the concentration of the solution. The strength of acids or bases depends on the extent to which they dissociate in aqueous solution. Increased industrialization has let to greater production of nitrogen and sulfur oxides leading to acid rain, which is damaging our environment.
Learning Targets. I can...
Correctly identify acid and base formula from names.
Deduce a Bronsted-Lowry acid and base in a chemical reaction as well as conjugate acids or bases.
Balance chemical equations for the reaction of acids.
Identify the acid and base to make different salts.
Complete an acid base titration with an indicator, pH sensor and/or universal indicator.
Distinguish between strong and weak acids and bases.
Solve problems involving pH, [H+] and [OH-].
Deduce the identity of unknown ions in solution applying acid base, equilibrium and solution chemistry.

DUE DATES
Worksheet 1: Naming Acids and Bases due 4/20
Worksheet 2: Bronsted Lowry Acids and Bases due 5/22
Worksheet 3: Acids and Base Reactions due 5/22
Worksheet 4: Calculating pH
Worksheet 5: pH and pOH
Worksheet 6: Buffers and Vampire Slayers...
Take home 'Test' Worksheet: Acids and Bases
Lab QA: Qualitative Analysis (3 unknowns due by 5/11)
Lab 1 : Titration of Unknown Concentration due 5/21
Lab 2: Solution Dilutions with pH data table set up Data Student Example due 5/24
Lab 3 : Determining Hydrogen Ion Concentration Strong and Weak Acids
Alternative assignment second semester
Chemistry Acids and Bases worksheet for the quiz ANSWER sheet
Acid Bases ENDMEMO