Chemistry
Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Question

In the second part of this experiment, a student makes a solution with initial concentrations of iron(III) and thiocyanate ions of 0.000900 M and 0.000600 M respectively. Using the Beer's Law plot produced in the first part of the lab, the student determines the equilibrium concentration of the thiocyanatoiron(III) complex (Fe(SCN)2+) to be 2.00 × 10−5 M.

 What are the equilibrium concentrations of the two starting ions, and what is the value of the equilibrium constant?
 

 
[Fe3+] = 
[SCN−] = 
 Kc = 
 
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