The weak acid corresponding to the salt benzylpenicillin sodium, molecular weight 356.38, has a pKa of 2.76,

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The weak acid corresponding to the salt benzylpenicillin sodium, molecular weight 356.38, has a pKa of 2.76, and the drug is dissolved in isotonic sodium chloride solution (0.9 g NaCl per 100 mL) to make a 3% w/v solution of the antibiotic.

(a) What is the pH of this solution, disregarding activity coefficients?

(b) What is the result using ionic activity coefficients? (Use the Debye–Huckel equation.) The answers for a and b are 7.84 and 7.68, respectively.

Related Book For answer-question

Chemical Principles

ISBN: 978-1111580650

7th edition

Authors: Steven S. Zumdahl, Donald J. DeCoste

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Posted Date: Sep 12, 2020 06:15 PM

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The weak acid corresponding to the salt benzylpenicillin sodium, molecular weight 356.38, has a pKa of 2.76,

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Chemical Principles

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