13. A phosphate buffer solution (25.00 mL sample) used for a growth medium was titrated with 0.1000 M hydrochloric acid. The components of the buffer were sodium monohydrogen phosphate and sodium dihydrogen phosphate. The first endpoint occurred at a volume of 10.32 mL, and the second occurred after an additional 18.62 mL was added, for a total volume of 28.94 mL. What was the total concentration of phosphate (in any form) in the buffer?
13. A phosphate buffer solution (25.00 mL sample) used for a growth medium was titrated with 0.1000 M hydrochloric acid. The components of the buffer were sodium monohydrogen phosphate and sodium dihydrogen phosphate. The first endpoint occurred at a volume of 10.32 mL, and the second occurred after an additional 18.62 mL was added, for a total volume of 28.94 mL. What was the total concentration of phosphate (in any form) in the buffer?
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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A phosphate buffer solution (25.00 mL sample) used for a growth medium was titrated with 0.1000 M hydrochloric acid. The components of the buffer were sodium monohydrogen phosphate and sodium dihydrogen phosphate. The first endpoint occurred at a volume of 10.32 mL, and the second occurred after an additional 18.62 mL was added, for a total volume of 28.94 mL. What was the total concentration of phosphate (in any form) in the buffer?
**Please be as detailed as possible. The different volumes in this titration are a little difficult to understand**
THANK you in advance.
Transcribed Image Text:13. A phosphate buffer solution (25.00 mL sample) used for a growth
medium was titrated with 0.1000 M hydrochloric acid. The components of the buffer
were sodium monohydrogen phosphate and sodium dihydrogen phosphate. The first
endpoint occurred at a volume of 10.32 mL, and the second occurred after an additional
18.62 mL was added, for a total volume of 28.94 mL. What was the total concentration
of phosphate (in any form) in the buffer?
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