CHEM1109 - Resources for Week 7
Week 6
Topics and learning outcomes
Acids and Bases
explain the advantages of the Bronsted-Lowry acid-base definition over the Arrhenius definition
understand the relationships between pH, pOH, pK a , pK b and pK w
predict qualitatively the excess species in weak conjugate acid-base pairs at a given pH
calculate the pH, pOH, [H+ ] and [OH- ] for aqueous solutions of strong acids and bases
predict qualitatively the relative acidities of strong acids
calculate the pH, pOH, [H+ ] and [OH- ] for very diluite solutions of strong acids and bases
calculate the pH, pOH, [H+ ] and [OH- ] for aqueous solutions of weak acids and bases
calculate the pK a of a weak, monoprotic acid from the pH of its solution
predict the sequence of strengths of acidities of weak, polyprotic acids
predict qualitatively the pH of salt solutions
calculate the pH of solutions of hydrated metal ions
identify Lewis acids and bases
explain the origin of buffering action
calculate the pH change for addition of acid or base to a buffer
choose an appropriate buffer for any pH value
explain how to prepare a buffer solution
explain the buffering action of Hs CO3 / HCO3 - in the blood
explain how to perform an acid-base titration
selection an indicator for the titration of any combination of acid and base
predict the charge of an amino acid and its direction of migration in electrophoresis given its pI
explain the origins of positive and negative charges on a protein
predict qualitatively the change in solubility of a protein with changing pH given its pI
Solubility
convert between concentration units of molarity and ppm
write solubility product expressions
calculate K sp from solubility data
calculate solubility from K sp
calculate the effects of a common ion on solubility
predict whether or not a precipitate will form at a given concentration of salt solutions
explain why iron storage proteins are required for iron
Lecture notes, tutorial homework and resources
ChemCAL and other resources
Acids and Bases
Solubility
To access ChemCAL, use the username "1109" and the password "helium"
Contributed links
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Week 8