A student performs an experiment to determine equilibrium constant for the formation of FeSCN (ag) using iron() nitrate and potassium thiocyanate Fe"(ag) + SCN (ag) FESCN" (ag) The student collects the following data. Preparation of FESCN" (ag): Concentration, M Volume used (ml.) Stock solution Fe(NO,), 29.50 1.750 x 10 29.90 KSCN 2.450 10

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A student performs an experiment to determine equilibrium constant for the formation of FeSCN (ag) using iron() nitrate and potassium thiocyanate
Fo"(ag)
* SCN (ag) FESCN" (ag)
The student collects the following data.
Preparation of FeSCN" (ag):
Concentration, M
Volume used (ml.)
Stock solution
Fe(NO,),
1.750 x 10
29.50
29.90
KSCN
2.450 x 10
Absorbance for prepared FESCN" (ag): 0.725
Calibration Curve: y 392.96.x
Transcribed Image Text:A student performs an experiment to determine equilibrium constant for the formation of FeSCN (ag) using iron() nitrate and potassium thiocyanate Fo"(ag) * SCN (ag) FESCN" (ag) The student collects the following data. Preparation of FeSCN" (ag): Concentration, M Volume used (ml.) Stock solution Fe(NO,), 1.750 x 10 29.50 29.90 KSCN 2.450 x 10 Absorbance for prepared FESCN" (ag): 0.725 Calibration Curve: y 392.96.x
Part 1 of 4
Calculate the Initial concentrations for the iron() and thiocyanate ions. Round your answer to 3 significant digits.
[Fe Juital
[SCN -|
M
Jinitial
Transcribed Image Text:Part 1 of 4 Calculate the Initial concentrations for the iron() and thiocyanate ions. Round your answer to 3 significant digits. [Fe Juital [SCN -| M Jinitial
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