(2) (a) 7; (b) 10
(3) 39.2
(4) logKD = 0.3; pKa = 6.0
(5) At pH 1, D = 0.058; concentration remaining = 0.0945%
At pH 6, D = 640; concentration remaining = 1.6 × 10 -^4 %At pH 10, D = 300; concentration remaining = 3.3 × 10 -^4 %(6) Indium 1.2, 2.8; cadmium 4.8, 7.3; silver 5.8, 10.8. Indium and cadmium or silver can be separated;
cadmium and silver cannot.
(8) (a) 4532; (b) 6273; (c) 9801; (d) 39204; (e) 1866