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CHEM1002 - Resources for Week 9


Topics and Learning Outcomes

  • Weak Acids and Bases
    •  explain the difference between a strong and weak acid and the difference between a strong and weak base in terms of the percentage dissociation in solution
    •  explain the increase in pKa values for dissocation of the protons in a polyprotic acid
  • Calculations Involving pKa
    •  use pKw, pKa and pKb to calculate the pH of a solution containing a weak acid or base
    •  use the increase in pKa values for dissocation of the protons in a polyprotic acid to perform calculations
    •  be able to explain what buffers are and how they work
    •  be able to calculate the pH of a buffer system and be able to design a buffer with a required pH
    •  use titration curves to characterize acids and bases, using the pH at the equivalence and half-equivalence points
    •  design and perform titration experiments to obtain pKa values with appropriate choice of indicator
  • Periodic Trends
    •  recognize trends in the Periodic Table and the correlation between the trends in atomic radii, ionization energies and electronegativity
    •  explain the origin of these trends in terms of the electronic structure of the atoms
    •  predict reactivity based on these trends, particularly how the acid, base or amphoteric character of an element's oxide and hydroxide are related to its position in the Periodic Table
  • Intermolecular Forces and Phase Behaviour
    •  list the types of intermolecular forces and their relative strengths
    •  identify the intermolecular forces that exist for particular compounds
    •  rank melting and boiling points for related compounds on the basis of these forces

Textbook and eBook References

  • Weak Acids and Bases - Section 11.4
  • Calculations Involving pKa - Sections 11.4, 11.6 and 11.7
  • Periodic Trends - Sections 4.8 - 4.9 and 11.8
  • Intermolecular Forces and Phase Behaviour - Sections 6.7 - 6.8
the eBook references are free and are taken from high quality sources.

Lecture Notes, Tutorial Worksheets & Answers and Suggested Exam Questions

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ChemCAL and iChem Resources

Contributed Links and Resources

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Weak Acids and Bases -  
Calculations Involving pKa -  
  Definition of pH, pOH, "p", sample calculations  
 
 
Periodic Trends -  
Intermolecular Forces and Phase Behaviour -  

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