Consider the following method for the analysis of cocaine (MW 303.35) powder. "Dissolve about 600 mg of cocaine, preciously dried and accurately weighed, in 50 mL of glacial acetic acid, add I drop of crystal violet TS, and titrate with 0.1 M perchloric acid VS to a green endpoint. Perform a blank determination, and make the necessary correction" Calculate the percentage purity of the cocaine sample from the data below. Show your reasoning clearly and record your final answer to four significant figures. Cocaine powder weighed = 606.3 mg Concentration of HCIO3 = 0.09978 M H₂C-N Volume HCIO3 required for the assay mixture = 19.97 mL Volume HCIO3 required for blank determination = 0.059'mL ●

Consider the following method for the analysis of cocaine (MW 303.35) powder. "Dissolve about 600 mg of cocaine, preciously dried and accurately weighed, in 50 mL of glacial acetic acid, add I drop of crystal violet TS, and titrate with 0.1 M perchloric acid VS to a green endpoint. Perform a blank determination, and make the necessary correction" Calculate the percentage purity of the cocaine sample from the data below. Show your reasoning clearly and record your final answer to four significant figures. Cocaine powder weighed = 606.3 mg Concentration of HCIO3 = 0.09978 M H₂C-N Volume HCIO3 required for the assay mixture = 19.97 mL Volume HCIO3 required for blank determination = 0.059'mL ●

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

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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