A student mixes 5.00 mL 2.00x10-3 M FeCl3 with 3.00 mL 2.00x10-3 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.28x10-4 M. Find Keq for the reactiona. Find the number of moles Fe3+ initially present.b. Find the number of moles SCN- initially present.c. What is the volume of the equilibrium mixture?d. How many moles of FeSCN2+ are in the equilibrium mixture?

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Answered: A student mixes 5.00 mL 2.00x10-3 M…

Chemical Principles in the Laboratory

11th Edition

ISBN:9781305264434

Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi

Chapter23: Determination Of The Equilibrium Constant For A Chemical Reaction

Section: Chapter Questions

Problem 1ASA

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A student mixes 5.00 mL 2.00x10^-3 M FeCl₃ with 3.00 mL 2.00x10^-3 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN²⁺ is 1.28x10^-4 M. Find K_eq for the reaction

a. Find the number of moles Fe³⁺ initially present.

b. Find the number of moles SCN^- initially present.

c. What is the volume of the equilibrium mixture?

d. How many moles of FeSCN²⁺ are in the equilibrium mixture?

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