[FESCN2+]eq [Fe3+]eq[SCN-]eq (Eqn. 2.8) Kea = . [Fe3+];: Calculate initial concentration of Fe3+ based on the dilution that results from adding KSCN solution and water to the original 0.0020 M Ee(NO3)3 solution. See Step 2 of the procedure for the volume of each substance used in Trials 1-4. Recall that in order to determine the concentration of ample that is a dilution of a solution with known concentration, we use M;V; = M;V;. (mL Fe(NO,);) · (0.0020M) [Fe3+]; total mL . Calculate the initial concentration of SCN, based on its dilution by Ee(NO3)3 and water: (mL KSCN) · (0.0020M) [SCN¯]; total mL

[FESCN2+]eq [Fe3+]eq[SCN-]eq (Eqn. 2.8) Kea = . [Fe3+];: Calculate initial concentration of Fe3+ based on the dilution that results from adding KSCN solution and water to the original 0.0020 M Ee(NO3)3 solution. See Step 2 of the procedure for the volume of each substance used in Trials 1-4. Recall that in order to determine the concentration of ample that is a dilution of a solution with known concentration, we use M;V; = M;V;. (mL Fe(NO,);) · (0.0020M) [Fe3+]; total mL . Calculate the initial concentration of SCN, based on its dilution by Ee(NO3)3 and water: (mL KSCN) · (0.0020M) [SCN¯]; total mL

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter26: Molecular Absorption Spectrometry

Section: Chapter Questions

Problem 26.14QAP

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