Homework Help is Here – Start Your Trial Now!
Science
Chemistry
You wish to make a buffer of 500 mL at 0.1 M sodium phosphate at pH 6.5. If the molecular weight of NaH2PO4 and NazHPO4 are 121 g/mol and 143 g/mol, respectively, and the three pK, values or phosphoric acid are 2.14, 6.86, and 12.4, respectively, how many grams each of the two sodium phosphate salts must be dissolved to make 500 mL of a 0.1 M solution that buffers at pH 6.5?

You wish to make a buffer of 500 mL at 0.1 M sodium phosphate at pH 6.5. If the molecular weight of NaH2PO4 and NazHPO4 are 121 g/mol and 143 g/mol, respectively, and the three pK, values or phosphoric acid are 2.14, 6.86, and 12.4, respectively, how many grams each of the two sodium phosphate salts must be dissolved to make 500 mL of a 0.1 M solution that buffers at pH 6.5?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
See similar textbooks
icon
Related questions
Question
You wish to make a buffer of 500 mL at 0.1 M sodium phosphate at pH 6.5. If the molecular weight of NaH₂PO₄ and Na₂HPO₄ are 121 g/mol and 143 g/mol, respectively, and the three pKₐ values for phosphoric acid are 2.14, 6.86, and 12.4, respectively, how many grams each of the two sodium phosphate salts must be dissolved to make 500 mL of a 0.1 M solution that buffers at pH 6.5?
Transcribed Image Text:You wish to make a buffer of 500 mL at 0.1 M sodium phosphate at pH 6.5. If the molecular weight of NaH₂PO₄ and Na₂HPO₄ are 121 g/mol and 143 g/mol, respectively, and the three pKₐ values for phosphoric acid are 2.14, 6.86, and 12.4, respectively, how many grams each of the two sodium phosphate salts must be dissolved to make 500 mL of a 0.1 M solution that buffers at pH 6.5?
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS