The amino acid glycine (H2N—CH2—COOH) can participatein the following equilibria in water:H2N—CH2—COOH + H2O ⇌H2N—CH2—COO- + H3O+ Ka = 4.3 x 10-3 H2N—CH2—COOH + H2O ⇌+H3N—CH2—COOH + OH- Kb= 6.0 x 10-5(a) Use the values of Ka and Kb to estimate the equilibriumconstant for the intramolecular proton transfer to forma zwitterion:H2N—CH2—COOH ⇌ +H3N—CH2—COO-(b) What is the pH of a 0.050 M aqueous solution of glycine?(c) What would be the predominant form of glycine in asolution with pH 13? With pH 1?

The amino acid glycine (H2N—CH2—COOH) can participatein the following equilibria in water:H2N—CH2—COOH + H2O ⇌H2N—CH2—COO- + H3O+ Ka = 4.3 x 10-3 H2N—CH2—COOH + H2O ⇌+H3N—CH2—COOH + OH- Kb= 6.0 x 10-5(a) Use the values of Ka and Kb to estimate the equilibriumconstant for the intramolecular proton transfer to forma zwitterion:H2N—CH2—COOH ⇌ +H3N—CH2—COO-(b) What is the pH of a 0.050 M aqueous solution of glycine?(c) What would be the predominant form of glycine in asolution with pH 13? With pH 1?

EBK A SMALL SCALE APPROACH TO ORGANIC L

4th Edition

ISBN:9781305446021

Author:Lampman

Publisher:Lampman

Chapter47: Benzocaine

Section: Chapter Questions

Problem 4Q

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