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To determine the purity of a synthetic preparation of methylethyl ketone, C4H8O, it was reacted with hydroxylamine hydrochloride, liberating HCl (reaction: NH2OH.HCl + C4H8O -> C4H9NO + H20 + HCl). In a typical analysis a 3.00-mL sample was diluted to 50.00 mL and treated with an excess of hydroxylamine hydrochloride. The liberated HCl was titrated with 1.2149 M NaOH, requiring 35 mL to reach the end point. A. Write the acid base reaction involved in the titration. B. Report the percent purity of the sample given that the density of methylethyl ketone is 0.805 g/mL.

To determine the purity of a synthetic preparation of methylethyl ketone, C4H8O, it was reacted with hydroxylamine hydrochloride, liberating HCl (reaction: NH2OH.HCl + C4H8O -> C4H9NO + H20 + HCl). In a typical analysis a 3.00-mL sample was diluted to 50.00 mL and treated with an excess of hydroxylamine hydrochloride. The liberated HCl was titrated with 1.2149 M NaOH, requiring 35 mL to reach the end point. A. Write the acid base reaction involved in the titration. B. Report the percent purity of the sample given that the density of methylethyl ketone is 0.805 g/mL.

Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
11th Edition
ISBN:9781285869759
Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres
Chapter19: Carboxylic Anhydrides, Esters, And Amides
Section: Chapter Questions
Problem 19.37P
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To determine the purity of a synthetic preparation of methylethyl ketone, C4H8O, it was reacted with hydroxylamine hydrochloride, liberating HCl (reaction: NH2OH.HCl + C4H8O -> C4H9NO + H20 + HCl). In a typical analysis a 3.00-mL sample was diluted to 50.00 mL and treated with an excess of hydroxylamine hydrochloride. The liberated HCl was titrated with 1.2149 M NaOH, requiring 35 mL to reach the end point.

A. Write the acid base reaction involved in the titration.

B. Report the percent purity of the sample given that the density of methylethyl ketone is 0.805 g/mL.

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