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Transcript
Ch. 16 Acid Base Equilibria Wednesday Thursday Sect 1-8 Sect 1-8 Monday ///////////// ///////////// Tuesday Sect 1-8 Autoionization of water; pH Strong vs Weak Acid vs Base Intro to Calc and Models Practice Calculations and Drawing Models Computer Lab Work on Assignment; ask questions HW Due Ch16Sect1-8 Sect 9 Sect 9 Sect 10 Group Practice Types of Salts: acidic, basic, neutral; Ka vs Kb Calculations involving salts Acid Strength based on Molecular Structure //////////// //////////// //////////// ///////////// ///////////// TEST Optional Assignment Due ///////////// ///////////// Friday Sect 1-8 HW Due Ch16Sect9-10 ///////////// ///////////// ///////////// ///////////// Learning Objectives Sect 1-8 *Identify that neutralization requires [H3O+] = [OH-], as opposed to requiring pH = 7, based on the dependence of Kw on temperature. *Use proton transfer to identify compounds as Bronsted-Lowry acids, bases, or neither. *Identify conjugate acid-base pairs. *Translate an observed chemical change in to a balanced chemical equation (molecule, ionic, net ionic). *Draw and/or interpret representation of solutions that show the interactions between solute and solvent. *Draw and/or interpret representations that link the concept of molarity with particle views of solutions. *Determine the effects of manipulations on Q or K. *Given K, determine which chemical species will have very large versus very small concentrations at equilibrium. *Use Ka or Kb values to infer relative strength of acid or base. *Use particulate representations of acids and bases (strong, weak, polyprotic) to explain which species will have very large versus small concentrations at equilibrium. *Draw models illustrating the relative amounts of species in solutions of one or more acid or base (only acids or only bases … mixtures of acids and bases is covered in the next chapter). *Perform calculations relating pH, pOH, pKa, pKb, Ka, Kb, Kw, [H3O+], [OH-], [HA], [B], % ionization in solutions containing one or more acid or one or more base. *Calculate or estimate the pH and/or concentration of all species, in a solution of one strong or weak acid or base, or a mixture of acids, or a mixture of bases. (the mixtures would contain at least one strong acid or base). *Reason about the distinctions between strong and weak acid solutions with similar pH values, including % ionization of each acid and concentration of each acid. Sect 9 *Predict whether an aqueous solution of a salt will be acidic, basic, or neutral. *Rank acidity (or pH) of chemicals listed (acids, bases, and salts) based on the Ka or Kb of the associated cations and anions and/or their conjugates. *Calculate the pH of solutions containing a given concentration of salt (only if it only contains one ion that effects pH). Sect 10 *Predict the relative strength of a series of acids from their molecular structures: -trends in atomic properties (IE, EA, Radius, Reactivity) based on location on the periodic table and/or the shell model. -relationships between the structural features of polar molecules and the forces of attraction between particles.