Iron (III) ions and thiocyanate ions react to form a complex ion according to the following equation. Fe*(aq) + SCN (aq) = FESCN2+* (aq) 10.0 mL of a 0.00200 mol L-' solution of iron (III) was added to 10.0 mL of a 0.00200 molL-' solution of thiocyanate ions and mixed. The mixture was tested after a period of time and the concentration of the iron thiocyanate complex was found to be 1.45 × 104 molL-!. Under the conditions used, the theoretical value of the equilibrium constant (Keq) is 2.05 x 102. 5 x Determine in which direction the reaction must proceed to reach equilibrium. Include the relevant calculations in your answer.

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Chapter1: Chemical Foundations
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1.
Iron (III) ions and thiocyanate ions react to form a complex ion according to the
following equation.
Fe*(aq) + SCN (aq)
न FeSCN2+
(aq)
10.0 mL of a 0.00200 mol L-' solution of iron (III) was added to 10.0 mL of a 0.00200
molL- solution of thiocyanate ions and mixed. The mixture was tested after a period of
time and the concentration of the iron thiocyanate complex was found to be 1.45 × 104
molL-!. Under the conditions used, the theoretical value of the equilibrium constant (Keq)
is 2.05 × 10².
Determine in which direction the reaction must proceed to reach equilibrium. Include the
relevant calculations in your answer.
Transcribed Image Text:1. Iron (III) ions and thiocyanate ions react to form a complex ion according to the following equation. Fe*(aq) + SCN (aq) न FeSCN2+ (aq) 10.0 mL of a 0.00200 mol L-' solution of iron (III) was added to 10.0 mL of a 0.00200 molL- solution of thiocyanate ions and mixed. The mixture was tested after a period of time and the concentration of the iron thiocyanate complex was found to be 1.45 × 104 molL-!. Under the conditions used, the theoretical value of the equilibrium constant (Keq) is 2.05 × 10². Determine in which direction the reaction must proceed to reach equilibrium. Include the relevant calculations in your answer.
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