1. (18 pts) Referring to the table "Relationship between Z^{2}/r Ratios
and Acidity of Metal Ions", compute the smallest and largest radius
that will allow a +1 ion to fit into each category of cation acidity.
Do the same for a +2, +3 and +4 cation. The referring to Table C (and
a table of electronegativities) , list all ions from table C that fit
into each of the categories. Locate the ions of each category on a periodic
table to see what sort of periodic pattern results.
2. (12 pts) Consider the cations U^{3+}, Ag^{+}, As^{3+}, Mg^{+2}
(a) Classify the acidity of each of these cations and describe the reactions
of their chlorides with water.
(b) Which of these would give cloudiness or precipitation upon dissolving
in water? What would you do to rectify this if it occurred?
(c) Using the equations for calculating pK<sub>a</sub> in
the reading notes, calculate pK<sub>a</sub> for each of the
cations and determine whether any of the ions needs to be shifted to another
category of acidity.
