Similar to Experiment 1, this lab uses an excess of a certain reactant. In this labexcess SCN- is used to:Ensure an equilibrium reaction.Speed up the reaction.Ensure the reaction goes to completion.Modify the rate law such that k' depends on Fe3+. In Part 1 of the experiment, you will generate a calibration curve in order to determine el for this reaction. In order toensure that the [Fe(SCN)2*] for these calibration solutions is accurately known, a large excess of SCN is used, so that theequilibrium for these solutions lies heavily to the products, and we can assume all of the Fe2* added becomes Fe(SCN)2*.In Part 2, you will observe solutions prepared with various initial reactant concentrations in order to determine Keg for theformation of iron(II) thiocyanate.

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the reaction goes to completion. the rate law such that k' depends on Fe3+.

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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Question

Similar to Experiment 1, this lab uses an excess of a certain reactant. In this lab
excess SCN- is used to:
Ensure an equilibrium reaction.
Speed up the reaction.
Ensure the reaction goes to completion.
Modify the rate law such that k' depends on Fe3+.

In Part 1 of the experiment, you will generate a calibration curve in order to determine el for this reaction. In order to
ensure that the [Fe(SCN)2*] for these calibration solutions is accurately known, a large excess of SCN is used, so that the
equilibrium for these solutions lies heavily to the products, and we can assume all of the Fe2* added becomes Fe(SCN)2*.
In Part 2, you will observe solutions prepared with various initial reactant concentrations in order to determine Keg for the
formation of iron(II) thiocyanate.

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