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Determination of thermodynamics quantities. Part A. Calculate the concentration of Fe3+ and SCN in your first solution taking diultion into account. one reactant is in large excess one is limiting assume the reaction goes to completion, calculate the [FeSCN2+] Part B you have measured the absorbance of an equilibrium [FeSCN2+] in room temperature. From the absorbance of this solution and using beers law equation A = EIC where A is absorbance E is molar absorpitivity I is path length. Both part A and B were measuring absorbance of the same compound their molar absorptivity and path would essentially be identical leading to the relationship of A1 Elc1 and A2 = Elc2. The same compound FeSCN 2+ was measured with the same device cuvette hence El is constant for both cases leaving A1/c1 = El = A2/C2 Part C. You should now be able to calculate all equilibrium [FeSCN2+] in the various temperature you measured after determining the initial concentration of Fe3+ ans scn- then use an ice type calculation to determine the equilibrium. concentration of the reactant. Calculate K in each case. GRAH AND FILL THE EXCEL SPREED SHEET INSERT A PLOT IN(K) versus 1/T(k-1) with linear trend. CALCUATE DELTA H AND DELTA S ASSUMING THE TEMPERATURE IS 23C DETERMINE DELTA G DATA***** Part A absorbance 0.358, wavelength 458.7nm Part B absorbance 0.567 same wavelenth Fe(NO3)3 1.5e-3 M and 3.00e-3 M KSCN pipette 10ml of fe(no3)3 into 25ml flask. same with KSCN. Absorbance 0.546, 0.562, 0.592, 0.625 Temp Finall 30.3, 25.2, 20.7, 14.5 Temp Inital 39.7 30.4 25.16 18.30 11.70

Determination of thermodynamics quantities. Part A. Calculate the concentration of Fe3+ and SCN in your first solution taking diultion into account. one reactant is in large excess one is limiting assume the reaction goes to completion, calculate the [FeSCN2+] Part B you have measured the absorbance of an equilibrium [FeSCN2+] in room temperature. From the absorbance of this solution and using beers law equation A = EIC where A is absorbance E is molar absorpitivity I is path length. Both part A and B were measuring absorbance of the same compound their molar absorptivity and path would essentially be identical leading to the relationship of A1 Elc1 and A2 = Elc2. The same compound FeSCN 2+ was measured with the same device cuvette hence El is constant for both cases leaving A1/c1 = El = A2/C2 Part C. You should now be able to calculate all equilibrium [FeSCN2+] in the various temperature you measured after determining the initial concentration of Fe3+ ans scn- then use an ice type calculation to determine the equilibrium. concentration of the reactant. Calculate K in each case. GRAH AND FILL THE EXCEL SPREED SHEET INSERT A PLOT IN(K) versus 1/T(k-1) with linear trend. CALCUATE DELTA H AND DELTA S ASSUMING THE TEMPERATURE IS 23C DETERMINE DELTA G DATA***** Part A absorbance 0.358, wavelength 458.7nm Part B absorbance 0.567 same wavelenth Fe(NO3)3 1.5e-3 M and 3.00e-3 M KSCN pipette 10ml of fe(no3)3 into 25ml flask. same with KSCN. Absorbance 0.546, 0.562, 0.592, 0.625 Temp Finall 30.3, 25.2, 20.7, 14.5 Temp Inital 39.7 30.4 25.16 18.30 11.70

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Determination of thermodynamics quantities. Part A. Calculate the concentration of Fe3+ and SCN in your first solution taking diultion into account. one reactant is in large excess one is limiting assume the reaction goes to completion, calculate the [FeSCN2+] Part B you have measured the absorbance of an equilibrium [FeSCN2+] in room temperature. From the absorbance of this solution and using beers law equation A = EIC where A is absorbance E is molar absorpitivity I is path length. Both part A and B were measuring absorbance of the same compound their molar absorptivity and path would essentially be identical leading to the relationship of A1 Elc1 and A2 = Elc2. The same compound FeSCN 2+ was measured with the same device cuvette hence El is constant for both cases leaving A1/c1 = El = A2/C2 Part C. You should now be able to calculate all equilibrium [FeSCN2+] in the various temperature you measured after determining the initial concentration of Fe3+ ans scn- then use an ice type calculation to determine the equilibrium. concentration of the reactant. Calculate K in each case. GRAH AND FILL THE EXCEL SPREED SHEET INSERT A PLOT IN(K) versus 1/T(k-1) with linear trend. CALCUATE DELTA H AND DELTA S ASSUMING THE TEMPERATURE IS 23C DETERMINE DELTA G DATA***** Part A absorbance 0.358, wavelength 458.7nm Part B absorbance 0.567 same wavelenth Fe(NO3)3 1.5e-3 M and 3.00e-3 M KSCN pipette 10ml of fe(no3)3 into 25ml flask. same with KSCN. Absorbance 0.546, 0.562, 0.592, 0.625 Temp Finall 30.3, 25.2, 20.7, 14.5 Temp Inital 39.7 30.4 25.16 18.30 11.70
Transcribed Image Text:Determination of thermodynamics quantities. Part A. Calculate the concentration of Fe3+ and SCN in your first solution taking diultion into account. one reactant is in large excess one is limiting assume the reaction goes to completion, calculate the [FeSCN2+] Part B you have measured the absorbance of an equilibrium [FeSCN2+] in room temperature. From the absorbance of this solution and using beers law equation A = EIC where A is absorbance E is molar absorpitivity I is path length. Both part A and B were measuring absorbance of the same compound their molar absorptivity and path would essentially be identical leading to the relationship of A1 Elc1 and A2 = Elc2. The same compound FeSCN 2+ was measured with the same device cuvette hence El is constant for both cases leaving A1/c1 = El = A2/C2 Part C. You should now be able to calculate all equilibrium [FeSCN2+] in the various temperature you measured after determining the initial concentration of Fe3+ ans scn- then use an ice type calculation to determine the equilibrium. concentration of the reactant. Calculate K in each case. GRAH AND FILL THE EXCEL SPREED SHEET INSERT A PLOT IN(K) versus 1/T(k-1) with linear trend. CALCUATE DELTA H AND DELTA S ASSUMING THE TEMPERATURE IS 23C DETERMINE DELTA G DATA***** Part A absorbance 0.358, wavelength 458.7nm Part B absorbance 0.567 same wavelenth Fe(NO3)3 1.5e-3 M and 3.00e-3 M KSCN pipette 10ml of fe(no3)3 into 25ml flask. same with KSCN. Absorbance 0.546, 0.562, 0.592, 0.625 Temp Finall 30.3, 25.2, 20.7, 14.5 Temp Inital 39.7 30.4 25.16 18.30 11.70
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