Find the molarity of AgCl, molar solubility of MgC2O4.

1. What is the molarity of a saturated solution of AgCl? (Ksp = 1.8 x 10-10)
A.2.6 x 10-5
B.9.0 x 10-9
C.1.3 x 10-5
D.1.8 x 10-10
E.6.5 x 10-6

2. What is the concentration (M) of Mg2+ when MgC2O4 (Ksp = 8.5 x 10-5) begins to precipitate from a solution that is 0.020 M in C2O42-?
i.1.7 x 10-6
ii.1.7 x 10-4
iii.4.2 x 10-3
iv.4.2 x 10-5
v.3.4 x 10-4

3. What is the molar solubility of MgC2O4 (Ksp = 8.5 x 10-5) in a 0.020 M C2O42- solution?
a.3.4 x 10-4
b.1.7 x 10-6
c.4.2 x 10-3
d.4.2 x 10-5
e.1.7 x 10-4