3. Assume that the reaction studied is actually: Fe³+ (aq) + 2SCN- (aq) → Fe(SCN)₂+ (aq) a. What is the equation for determining the equilibrium constant? b. A student mixes 5.00 mL of 2.00 x 10-3 M Fe(NO3)3 with 5.00 mL of 2.00 x 10-3 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.40 x 104 M. Calculate the equilibrium concentration of Fe³+ and SCN-. c. Determine the numerical value of Keq.

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Chapter17: Solubility And Complex-ion Equilibria
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3. Assume that the reaction studied is actually: Fe³+ (aq) + 2SCN- (aq) → Fe(SCN)2+ (aq)
a. What is the equation for determining the equilibrium constant?
b.
A student mixes 5.00 mL of 2.00 x 10-3 M Fe(NO3)3 with 5.00 mL of 2.00 x 10-3 M KSCN.
She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.40 x 10-4 M.
Calculate the equilibrium concentration of Fe³+ and SCN-.
c. Determine the numerical value of Keq.
Transcribed Image Text:3. Assume that the reaction studied is actually: Fe³+ (aq) + 2SCN- (aq) → Fe(SCN)2+ (aq) a. What is the equation for determining the equilibrium constant? b. A student mixes 5.00 mL of 2.00 x 10-3 M Fe(NO3)3 with 5.00 mL of 2.00 x 10-3 M KSCN. She finds that in the equilibrium mixture the concentration of FeSCN2+ is 1.40 x 10-4 M. Calculate the equilibrium concentration of Fe³+ and SCN-. c. Determine the numerical value of Keq.
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