24-11 Traces of aniline can be determined by reaction with an excess of electrolytically generated Br,:CH;NH, + 3Br, C,H,Br,NH, + 3H + 3BrThe polarity of the working electrode is then reversed, and the excess bromine is determined by acoulometric titration involving the generation of Cu(I):Br, + 2Cu*→ 2Br + 2Cu2+Suitable quantities of KBr and copper(II) sulfate were added to a 25.0-mL sample containing aniline.Calculate the mass in micrograms of C,H;NH, in the sample from the accompanying data:Generation Time (min)Working ElectrodeFunctioning Aswith a Constant Currentof 1.00 mAAnode3.76Cathode0.270

The chemical reaction would be given as, Generation time for anode = 3.76 min. Generation time for…

Traces of aniline can be determined by reaction with an excess of electrolytically generated Br;: C,H;NH, + 3Br, → CH,Br,NH, + 3H + 3Br The polarity of the working electrode is then reversed, and the excess bromine is determined by a coulometric titration involving the generation of Cu(I): Br, + 2Cu+ 2Br + 2Cu²+ Suitable quantities of KBr and copper(II) sulfate were added to a 25.0-mL sample containing aniline. Calculate the mass in micrograms of C,H;NH, in the sample from the accompanying data: Generation Time (min) Working Electrode Functioning As with a Constant Current of 1.00 mA Anode 3.76 Cathode 0.270

Traces of aniline can be determined by reaction with an excess of electrolytically generated Br;: C,H;NH, + 3Br, → CH,Br,NH, + 3H + 3Br The polarity of the working electrode is then reversed, and the excess bromine is determined by a coulometric titration involving the generation of Cu(I): Br, + 2Cu+ 2Br + 2Cu²+ Suitable quantities of KBr and copper(II) sulfate were added to a 25.0-mL sample containing aniline. Calculate the mass in micrograms of C,H;NH, in the sample from the accompanying data: Generation Time (min) Working Electrode Functioning As with a Constant Current of 1.00 mA Anode 3.76 Cathode 0.270

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter25: Voltammetry

Section: Chapter Questions

Problem 25.12QAP

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Traces of aniline can be determined by reaction with an excess of electrolytically generated Br2: C6H5NH2 + 3Br2 =====è C6H2Br3NH2 + 3H+ + 3Br- The polarity of the working electrode is then reversed, and the excess bromine is determined by a coulometric titration involving the generation of Cu(I): Br2 + 2Cu+ ===è 2Br- + 2Cu2+ Suitbale quantities of KBr and copper (II) sulfate were added to a 25.0 ml sample containing aniline (C6H5NH2). Calculate the mass in micrograms of C6H5NH2 in the sample from the accompanying data. Working electrode Functioning as Generation Time (min) with a constant current of 1.00 mA Anode 3.76 cathode 0.270
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