Answer questions below about arginine (Arg) dissolved in water. Arg has the following pK, values: pK1 (-COOH) 2.17, pK2 (-NH3)=9.04 and pKR = 12.48. pk₁=2.17 Arg2+ PK2=9.04 Arg+ Argo PKR=12.48 Arg (a) What is the equilibrium ratio ((Arg)) and percentage of Arg" present at pH 7.4? [Argo] (b) What is the pH when Arg has a net charge of zero? (c) Draw the molecular structure of Arg at pH 1.0, 5.6, and 14.0, and indicate the overall charge on each species. (d) Calculate the overall charge of Arg at pH 8.50.
Answer questions below about arginine (Arg) dissolved in water. Arg has the following pK, values: pK1 (-COOH) 2.17, pK2 (-NH3)=9.04 and pKR = 12.48. pk₁=2.17 Arg2+ PK2=9.04 Arg+ Argo PKR=12.48 Arg (a) What is the equilibrium ratio ((Arg)) and percentage of Arg" present at pH 7.4? [Argo] (b) What is the pH when Arg has a net charge of zero? (c) Draw the molecular structure of Arg at pH 1.0, 5.6, and 14.0, and indicate the overall charge on each species. (d) Calculate the overall charge of Arg at pH 8.50.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![Answer questions below about arginine (Arg) dissolved in water. Arg has the following pK, values:
pK1 (-COOH) 2.17, pK2 (-NH3)=9.04 and pKR = 12.48.
pk₁=2.17
Arg2+
PK2=9.04
Arg+
Argo
PKR=12.48
Arg
(a) What is the equilibrium ratio ((Arg)) and percentage of Arg" present at pH 7.4?
[Argo]
(b) What is the pH when Arg has a net charge of zero?
(c) Draw the molecular structure of Arg at pH 1.0, 5.6, and 14.0, and indicate the overall charge on
each species.
(d) Calculate the overall charge of Arg at pH 8.50.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F450cf973-dfd2-42ad-96a2-b374d0b42273%2F5b3f80d6-1c68-472a-9515-f8df760ee53e%2F3fluj6s_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Answer questions below about arginine (Arg) dissolved in water. Arg has the following pK, values:
pK1 (-COOH) 2.17, pK2 (-NH3)=9.04 and pKR = 12.48.
pk₁=2.17
Arg2+
PK2=9.04
Arg+
Argo
PKR=12.48
Arg
(a) What is the equilibrium ratio ((Arg)) and percentage of Arg" present at pH 7.4?
[Argo]
(b) What is the pH when Arg has a net charge of zero?
(c) Draw the molecular structure of Arg at pH 1.0, 5.6, and 14.0, and indicate the overall charge on
each species.
(d) Calculate the overall charge of Arg at pH 8.50.
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