Chemistry 152 Chemistry Worksheet With Answers Page 2
ADVERTISEMENT
1
2
3
4
5
6
7
8, good assumption
16.6 Calculate the percent ionization of a 0.13 M formic acid solution in pure water and also
in a solution containing 0.11 M potassium formate. Explain the difference in percent
ionization in the two solutions.
SOLUTION:
-
+
O (l) ↔ CHO
HCHO
(aq) + H
(aq) + H
O
(aq)
2
2
2
3
-
+
↔
HCHO
(aq)
+ H
O (l)
CHO
(aq)
+ H
O
(aq)
2
2
2
3
I
0.13 M
-
0
0
C
-x
-
+x
+x
E
0.13-x
-
x
x
Always try the assumption. In this case x<<0.13
-
+
↔
HCHO
(aq)
+ H
O (l)
CHO
(aq)
+ H
O
(aq)
2
2
2
3
I
0.13 M
-
0
0
C
-0.00483
-
+0.00483
+0.00483
E
0.125
-
0.00483
0.00483
-
+
O (l) ↔ CHO
HCHO
(aq) + H
(aq) + H
O
(aq)
2
2
2
3
-
+
↔
HCHO
(aq)
+ H
O (l)
CHO
(aq)
+ H
O
(aq)
2
2
2
3
I
0.13 M
-
0.11
0
C
-x
-
+x
+x
E
0.13-x
-
0.11+x
x
ADVERTISEMENT
0 votes
Related Articles
Related forms
Related Categories
Parent category: Education