2CLabManual201303

Use three significant figures 66 a kinetics study

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Unformatted text preview: alue between 0 and 1. Please enter the absorbance you measured for the mixture of cobalt complexes at the wavelength of absorption maximum for the RED complex. Please enter the values you calculated for the concentrations of the green and red complexes in the mixture. (Use three significant figures.) 66 A Kinetics Study Kinetics Studies of trans-Co[(en)2Cl2]Cl and the Aquation Product, [Co(en)2(H2O)Cl]Cl2 INTRODUCTION In this segment of the experiment, you will be studying kinetics based on the same acid catalyzed hydrolysis reaction of the green chloro complex you previously prepared. Recall, in acidic solutions with low free chloride ion concentrations, one of the chloride ions in the trans-[Co(en)2Cl2]+ complex ion can be replaced by a water molecule to give an equilibrium mixture of the cis and trans isomers of the aquo complex, [Co(en)2(H2O)Cl]2+. This reaction is accompanied by a color change from green to red: trans-[Co(en)2Cl2]Cl + H2O H+ “chloro” complex (green color) cis- & trans- [Co(en)2(H2O)Cl]Cl2 “aquo” complex (red color) You will take advantage of a color change in this rea...
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This note was uploaded on 04/09/2013 for the course CHE CHE 2C taught by Professor Nasiri during the Spring '07 term at UC Davis.

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