Malin just discovered a new protein, Malinase and for it not to unfold and lose its function, he realized that the protein needs to be constantly immersed in a pH = 11.90 solution. He is therefore interested in preparing a 50.0 mL 0.080 M pH = 11.90 buffer to contain the protein. He listed down the acid solutions available to his disposal, and also looked for their acid dissociation constant (Ka) values. ACID Ка Каз Кa N/A N/A 4.00 x 10* 2.00 M NITROUS ACID (HNO:) 2.00 M ACETIC ACID (CH,COOH) 2.00 M ASCORBIC ACID (H;Asc) 2.00 M PHOSPHORIC ACID (H;POA) 7.52 x 10 6.23 x 10 4.28 x 103 N/A 1.76 x 10 N/A 7.90 x 10 1.60 x 102 N/A A. Identify which weak acid system is best to use in preparing the buffer? Why? В. Identify the species which will make up the buffer system? C. prepare the buffer Calculate the amount (in mmoles) of each of the components necessary to D. Indicate how Malin is supposed to prepare the buffer from 2.00 M of the acid and/or 4.00 M N2OH. E. Calculate the resulting pH if 5 drops (1 ml = 20 drops) 0.500 M HCI was accidentally added to the buffer.
Malin just discovered a new protein, Malinase and for it not to unfold and lose its function, he realized that the protein needs to be constantly immersed in a pH = 11.90 solution. He is therefore interested in preparing a 50.0 mL 0.080 M pH = 11.90 buffer to contain the protein. He listed down the acid solutions available to his disposal, and also looked for their acid dissociation constant (Ka) values. ACID Ка Каз Кa N/A N/A 4.00 x 10* 2.00 M NITROUS ACID (HNO:) 2.00 M ACETIC ACID (CH,COOH) 2.00 M ASCORBIC ACID (H;Asc) 2.00 M PHOSPHORIC ACID (H;POA) 7.52 x 10 6.23 x 10 4.28 x 103 N/A 1.76 x 10 N/A 7.90 x 10 1.60 x 102 N/A A. Identify which weak acid system is best to use in preparing the buffer? Why? В. Identify the species which will make up the buffer system? C. prepare the buffer Calculate the amount (in mmoles) of each of the components necessary to D. Indicate how Malin is supposed to prepare the buffer from 2.00 M of the acid and/or 4.00 M N2OH. E. Calculate the resulting pH if 5 drops (1 ml = 20 drops) 0.500 M HCI was accidentally added to the buffer.
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...
Related questions
Question
Transcribed Image Text:Malin just discovered a new protein, Malinase and for it not to unfold and lose
its function, he realized that the protein needs to be constantly immersed in a pH = 11.90
solution. He is therefore interested in preparing a 50.0 mL 0.080 M pH = 11.90 buffer to
contain the protein.
He listed down the acid solutions available to his disposal, and also looked for their acid
dissociation constant (Ka) values.
ACID
2.00 M NITROUS ACID (HNO:)
2.00 M ACETIC ACID (CH,COOH)
2.00 M ASCORBIC ACID (H:Asc)
Ka:
4.00 x 10
N/A
1.76 x 105
N/A
7.90 x 10 1.60 x 102
Kaz
Каз
N/A
N/A
N/A
2.00 M PHOSPHORIC ACID (H:PO4) 7.52 x 10 6.23 x 10 4.28 x 103
A.
Identify which weak acid system is best to use in preparing the buffer? Why?
В.
Identify the species which will make up the buffer system?
C.
prepare the buffer
. Calculate the amount (in mmoles) of each of the components necessary to
D.
Indicate how Malin is supposed to prepare the buffer from 2.00 M of the
acid and/or 4.00 M N2OH.
E.
Calculate the resulting pH if 5 drops (1 ml = 20 drops) 0.500 M HCI was
accidentally added to the buffer.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question
D. How is he supposed to prepare the buffer from 2.00 M of the acid and/or 4.00 M N2OH
E. Calculate the resulting pH if 5 drops (1 ml = 20 drops) 0.500 M HCI was accidentally added to the buffer.
Solution
by Bartleby ExpertKnowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY