18- Which of the following has higher solubility for
PbCl2 ?
1.0 M PbCl2 solution mixed with 0.5 M NaCl
solution
1.0 M PbCl2 solution
19- Which of the following solution is more basic?
a) The solution with [H+] =
0.05 M and [OH-] = 0.02
M
b) The solution with
[H+] = 0.02 M and [OH-] = 0.05 M
20- Which of the following solution is lower pH?
a) The solution with [H+] =
0.05 M and [OH-] = 0.02
M
b) The solution with
[H+] = 0.02 M and [OH-] = 0.05 M