6. Calculate the pH of a 0.050M solution of the weak base pyridine (
C
5
H
5
N
) if it has
K
b
= 1.7
x
10
-4
.
Balanced equation:
C
5
H
5
N (aq) + H
2
O (l)
HC
5
H
5
N
+
(aq) + OH
-
(aq)
I.C.E. table:
C
5
H
5
N (aq)
HC
5
H
5
N
+
(aq)
OH
-
(aq)
INITIAL
0.050M
0M
0M
CHANGE
EQUILIBRIUM
What are the changes in concentration of each species?
a) +xM, -xM, -xM
b) -xM, -xM, +xM
c) -xM, -xM, -xM
d) -xM, +xM, +xM
