How many grams of the conjugate acid phosphate salt would you need to prepare 100 mL of a 0.10 M phosphate buffer of pH 6.8. Use the below data in your calculations. Give the answer in grams rounded to nearest 3rd decimal point. Give just the number without units. • pKa of KH2PO4/K2HPO4: 7.21 Molecular weight of KH2PO4: 136.1 g/mol • Molecular weight of K2HPO4: 174.2 g/mol • Henderson-Hasselbach equation: [A-] pH = pK + log| a [HA]
How many grams of the conjugate acid phosphate salt would you need to prepare 100 mL of a 0.10 M phosphate buffer of pH 6.8. Use the below data in your calculations. Give the answer in grams rounded to nearest 3rd decimal point. Give just the number without units. • pKa of KH2PO4/K2HPO4: 7.21 Molecular weight of KH2PO4: 136.1 g/mol • Molecular weight of K2HPO4: 174.2 g/mol • Henderson-Hasselbach equation: [A-] pH = pK + log| a [HA]
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 16.58QE
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How many grams of the conjugate acid phosphate salt would you need to prepare 100 mL of a 0.10 M phosphate buffer of pH 6.8. Use the below data in your calculations. Give the answer in grams rounded to nearest 3rd decimal point. Give just the number without units.
pKa of KH2PO4/K2HPO4: 7.21
Molecular weight of KH2PO4: 136.1 g/mol
Molecular weight of K2HPO4: 174.2 g/mol
Use the Henderson-Hasselbach equation to answer.
![How many grams of the conjugate acid
phosphate salt would you need to prepare
100 mL of a 0.10 M phosphate buffer of pH
6.8. Use the below data in your calculations.
Give the answer in grams rounded to nearest 3rd
decimal point. Give just the number without
units.
• pKa of KH2PO4/K2HPO4: 7.21
Molecular weight of KH2PO4: 136.1 g/mol
• Molecular weight of K2HPO4: 174.2 g/mol
• Henderson-Hasselbach equation:
[A-]
pH = pK + log|
a
[HA]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fca7515a8-b44b-40fa-83f2-449e6ef6ad98%2F949d6bb9-38f5-40f5-9bab-ac30faa23aff%2Feezog3k_processed.jpeg&w=3840&q=75)
Transcribed Image Text:How many grams of the conjugate acid
phosphate salt would you need to prepare
100 mL of a 0.10 M phosphate buffer of pH
6.8. Use the below data in your calculations.
Give the answer in grams rounded to nearest 3rd
decimal point. Give just the number without
units.
• pKa of KH2PO4/K2HPO4: 7.21
Molecular weight of KH2PO4: 136.1 g/mol
• Molecular weight of K2HPO4: 174.2 g/mol
• Henderson-Hasselbach equation:
[A-]
pH = pK + log|
a
[HA]
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