A 492-mg sample containing KH2PO4 (136.09 g/mol) is titrated with 0.112 M NaOH requiring 25.60 mL. What is the percent KH2PO4 in the sample? H2PO4 + OH - → HPO4 2- + H2O A. 20.7 B. 79.3 C. 10.4 D. 0.121

Chemistry: The Molecular Science
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ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter15: Additional Aqueous Equilibria
Section: Chapter Questions
Problem 94QRT: Each of the solutions in the table has the same volume and the same concentration, 0.1 M. Which...
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A 492-mg sample containing KH2PO4 (136.09 g/mol) is titrated with 0.112 M NaOH requiring 25.60
mL. What is the percent KH2PO4 in the sample?
H2PO4 + OH - → HPO4 2- + H2O
A. 20.7
B. 79.3
C. 10.4
D. 0.121
Transcribed Image Text:A 492-mg sample containing KH2PO4 (136.09 g/mol) is titrated with 0.112 M NaOH requiring 25.60 mL. What is the percent KH2PO4 in the sample? H2PO4 + OH - → HPO4 2- + H2O A. 20.7 B. 79.3 C. 10.4 D. 0.121
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