Using the end-group analysis to find molecular weight, 6 mol of 1,4-butanediamine reacted with 6 mol 1,6-hexane-diacid (see formulas below). After the reaction titration was performed using Mg(OH)2 (which reacts with-COOH group only) to determine the number of acid groups remaining free after the polymerization. If 15 ml of 0.5M Mg(OH)z were required to neutralize the polymer, what is the average number average molecular weight (M,) of the polymer. 1,2-butanediamine: H2N - CH2 - CH2 – CH2 – CH2 – NH2 1,6-hexane-diacid: HOOC – CH2 – CH2 - CH2 – CH2 – COOH

Using the end-group analysis to find molecular weight, 6 mol of 1,4-butanediamine reacted with 6 mol 1,6-hexane-diacid (see formulas below). After the reaction titration was performed using Mg(OH)2 (which reacts with-COOH group only) to determine the number of acid groups remaining free after the polymerization. If 15 ml of 0.5M Mg(OH)z were required to neutralize the polymer, what is the average number average molecular weight (M,) of the polymer. 1,2-butanediamine: H2N - CH2 - CH2 – CH2 – CH2 – NH2 1,6-hexane-diacid: HOOC – CH2 – CH2 - CH2 – CH2 – COOH

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter31: Synthetic Polymers

Section31.SE: Something Extra

Problem 33AP

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