Determine the pH at the point in the titration of 40.0 mL of 0.200 M H2NNH2 with 0.100 M HNO3 after 80.0 mL of the strong acid has been added. The value of Kb for H2NNH2 is 3.0 x 10-6. 1 3 NEXT > Use the table below to determine the moles of reactant and product ater the reaction of the acid and base. H2NNH2(aq) H*(aq) H,NNH3 (aq) Before (mol) Change (mol) After (mol) 5 RESET 0.100 + x 0.100 - x 0.100 0.200 +x 6.00 x 10 -6.00 x 103 0.200 x -1.00 x 103 2.00 x 103 -2.00 x 103 0.200 + x 1.00 x 103 7.00 x 103 -7.00 x 103 8.00 x 103 -8.00 x 103

Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.53QE
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Question 16 of 20
Determine the pH at the point in the titration of 40.0 mL of 0.200 M
H2NNH2 with 0.100 M HNO3 after 80.0 mL of the strong acid has been
added. The value of Kb for H,NNH, is 3.0 x 10 6.
1
4
NEXT >
Use the table below to determine the moles of reactant and product ater the reaction of
the acid and base.
H2NNH2(aq)
H*(aq)
H2NNH;*(aq)
Before (mol)
Change (mol)
After (mol)
5 RESET
0.100 + x
0.100 - x
0.100
0.200
+x
6.00 x 103
-6.00 x 103
1.00 x 10 3
-1.00 x 10 3
2.00 x 103
-2.00 x 103
0.200 + x
0.200 -
7.00 x 10 3
-7.00 x 103
8.00 x 103
-8.00 x 10 3
↑
Transcribed Image Text:Question 16 of 20 Determine the pH at the point in the titration of 40.0 mL of 0.200 M H2NNH2 with 0.100 M HNO3 after 80.0 mL of the strong acid has been added. The value of Kb for H,NNH, is 3.0 x 10 6. 1 4 NEXT > Use the table below to determine the moles of reactant and product ater the reaction of the acid and base. H2NNH2(aq) H*(aq) H2NNH;*(aq) Before (mol) Change (mol) After (mol) 5 RESET 0.100 + x 0.100 - x 0.100 0.200 +x 6.00 x 103 -6.00 x 103 1.00 x 10 3 -1.00 x 10 3 2.00 x 103 -2.00 x 103 0.200 + x 0.200 - 7.00 x 10 3 -7.00 x 103 8.00 x 103 -8.00 x 10 3 ↑
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