3. What is the pH of a 7.6 x
10
-4
M solution of the strong acid
HNO
3
?
First we have to determine the balanced equation. In this case, for the dissociation of
HNO
3
in aqueous solution, the balanced equation is:
a)
HNO
3
(aq)
NO
2
+
(aq) + OH
-
(aq)
b)
HNO
3
(aq) + OH
-
(aq)
NO
3
-
(aq) + H
2
O (l)
c)
HNO
3
(aq)
H
+
(aq) + NO
3
-
(aq)
d)
HNO
3
(aq) + H
+
NO
2
+
(aq) + H
2
O (l)
