9. Calculate the pH of a 1.5 x 10-7 M solution of Sr(OH)2, a strong base.

Ionization equilibrium: H2O (l) H+ (aq) + OH- (aq)

I.C.E. table:

H2O (l) H+ (aq) OH- (aq)
INITIAL
-
0M
3.0x10-7M
CHANGE
-
+xM
+xM
EQUILIBRIUM
-

What are the equilibrium concentrations of the aqueous species?

a) 0M, 3.0x10-7M
b) -xM, (3.0x10-7-x)M
c) xM, (3.0x10-7+x)M
d) 3.0x10-7M, xM