Topics for test Acid & Bases

Topics for Acid Bases

  • Acid base theories
  • Arrhenius theory
  • Bronsted – Lowry theory
  • Lewis acid base theory
  • Examples of all the theories
  • pH, pOH,  – definitions and calculations
  • Formulas
  • pH = -log[H^+]
  • pOH = -log[OH^-]
  • pH + pOH = 14
  • [H^+] = 10^-pH
  • [OH^-] = 10^-pOH
  • Additional types of problems
  • Determining pH from the molar concentration of a strong base like NaOH
  • Determination of pH, pOH of a diprotic acid
  • Determination of molar concentration and mass of acid or base present in a solution whose pH or pOH is given.
  • Weak acids and pH, pOH, Ka, Kb, pKa, pKb, degree of dissociation
  • Determination of pH of a weak acid when Ka or degree of dissociation is given.
  • Determination of pOH of a weak base when Kb
  • Determination of pH of a weak acid when Ka or dissociation is given
  • Hydrolysis – Identify salts that undergo hydrolysis
  • How to identify strong and weak conjugate base and acid
  • Write Kb and Ka expressions for the hydrolysis of strong conjugate bases and acids
  • Problems on determining the pH of solutions that contains salts that undergo hydrolysis when Kb and Ka is given.
  • Lewis acid base reactions, primary and secondary amines and their Kb expressions
  • Hydrolysis
  • Kb and Ka for hydrolyis
  • What causes hydrolysis
  • Write equation to represent hydrolysis
  • Acid, Base, Conjugate acid, Conjugate base
  • Predict if a salt dissolved in water could change the pH of a solution
  • Buffers – preparation
  • Determination of pH of buffers
  • Calculation to determine the quantities of salts needed prepare buffers of desired pH
  • How to choose reagents that are appropriate for preparing solutions of desired pH
  • Henderson-Hasslebach equation and pH determination
  • Titration
  • Difference between equivalence point and end point
  • How to choose indicators when weak acids and or bases are used in titration
  • Determination of Ka
  • Graphing – pH vs volume for strong acids and strong base
  • Graphing – pH vs volume and weak acid or base
  • Buffers
  • Acidic buffers definition and example of preparation
  • Basic buffers definition and example of preparation
  • pH of buffers using Henderson-Hasslebach equation
  • Problems involving calculation of mass of acid or salt needed to prepare buffers of known pH
  • Buffering during titrations
  • Titrations
  • Calculation involving titrations of acids and bases
  • Determination of pH of solutions obtained by mixing solutions of acids and bases
  • Difference between end point and equivalence point
  • How to choose an indicator for a titration between an acid and a base
  • pH Vs concentration or Volume graphs for strong acid vs weak acids, weak acids vs strong bases, strong acids vs weak bases

Comments

  1. Sir, do we still have to memorize all the Ka values for the weak acid examples that you gave us? I’m finding it difficult to memorize and was hoping you could include the Ka values on the test.. 😀
    Thank you for your time

  2. Mr V
    can you post the buffer ppt up on your website, or atleast a link to it.
    thanks

  3. Sir I have a question. If we are not given the concentration of a substance for e.g HCHO2 (this is 100% dissociated) does that mean the initial concentration we can use is 0.100M in the ice table when we are trying to figure out Ka?