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concentration iron(II) nitrate 0.00400 0.00400 0.00400 0.00400 0.00400 (Fe(NO3)3l (M) Concentration potassium thiocyanate [KSCN] (M) 0.00400 0.00400 0.00400 0.00400 0.00400 Volume Fe(NO3)3 (mL) 5.00 5.00 5.00 5.00 5.00 Volume KSCN (mL) 5.00 4.00 3.00 2.00 1.00 Volume DI water (mL) 0.00 1.00 2.00 3.00 4.00 Initial concentration [Fe3*] (M) .00200 .00200 .00200 .00200 .00200 Initial concentration [SCN'] (M) .00200 .00160 .00120 .000800 .000400 Absorbance 0.784 0.587 0.474 0.369 0.165 Equilibrium [FESCN²ª] (M) Equilibrium constant K. Average K.

concentration iron(II) nitrate 0.00400 0.00400 0.00400 0.00400 0.00400 (Fe(NO3)3l (M) Concentration potassium thiocyanate [KSCN] (M) 0.00400 0.00400 0.00400 0.00400 0.00400 Volume Fe(NO3)3 (mL) 5.00 5.00 5.00 5.00 5.00 Volume KSCN (mL) 5.00 4.00 3.00 2.00 1.00 Volume DI water (mL) 0.00 1.00 2.00 3.00 4.00 Initial concentration [Fe3*] (M) .00200 .00200 .00200 .00200 .00200 Initial concentration [SCN'] (M) .00200 .00160 .00120 .000800 .000400 Absorbance 0.784 0.587 0.474 0.369 0.165 Equilibrium [FESCN²ª] (M) Equilibrium constant K. Average K.

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
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Can you help me answering the last 3 rows which is the Equilibrium [FeSCN2+] (M ), Equilibrium constant Kc and Average Kc.

K EQUILIBRIUM · EQUILIBRIUM CONSTANT (SPECTROPHOTOMETRY) SUBMIT INTRODUCTION LABORATORY SIMULATION PHASE 9: Lab Data - X Determine concentration of FESCN2+ Diluted solutions Complete the following steps. Place all Wavelength: used glassware in Wash/Waste bin. Solution 1 Solution 2 Solution 3 447 nm Use clean Pasteur pipet to transfer the following solutions Volume stock solution (mL) 4.00 4.00 4.00 ENTER WAVELENGTH Volume DI water (mL) 1.00 2.00 3.00 into separate 1-cm cuvettes Concentration iron(III) thiocyanate ion [FeSCN2*] (M) • solution 1 • solution 2 0.000240 0.000200 0.000171 Absorbance: 0.165 solution 3 solution 4 Calibration curve • solution 5 MEASURE SAMPLE Concentration iron(III) thiocyanate ion [FeSCN2+] (M) Solution Absorbance Use wipes to clean cuvettes CALIBRATED Stock 0.000300 0.381 3 Measure and record the Solution 1 0.000240 0.305 absorbance for each sample in Lab Data Solution 2 0.000200 0.254 "會會會會 • Place cuvette containing 12 3 45 Solution 3 0.000171 0.217 solution into spectrophotometer • Select Measure Sample BELS Molar absorptivity (M^cm-1) 1270 GO TO PHASE 10 Prepared solutions, absorbance, and calculated [FESCN2*] PHASES
Transcribed Image Text:K EQUILIBRIUM · EQUILIBRIUM CONSTANT (SPECTROPHOTOMETRY) SUBMIT INTRODUCTION LABORATORY SIMULATION PHASE 9: Lab Data - X Determine concentration of FESCN2+ Diluted solutions Complete the following steps. Place all Wavelength: used glassware in Wash/Waste bin. Solution 1 Solution 2 Solution 3 447 nm Use clean Pasteur pipet to transfer the following solutions Volume stock solution (mL) 4.00 4.00 4.00 ENTER WAVELENGTH Volume DI water (mL) 1.00 2.00 3.00 into separate 1-cm cuvettes Concentration iron(III) thiocyanate ion [FeSCN2*] (M) • solution 1 • solution 2 0.000240 0.000200 0.000171 Absorbance: 0.165 solution 3 solution 4 Calibration curve • solution 5 MEASURE SAMPLE Concentration iron(III) thiocyanate ion [FeSCN2+] (M) Solution Absorbance Use wipes to clean cuvettes CALIBRATED Stock 0.000300 0.381 3 Measure and record the Solution 1 0.000240 0.305 absorbance for each sample in Lab Data Solution 2 0.000200 0.254 "會會會會 • Place cuvette containing 12 3 45 Solution 3 0.000171 0.217 solution into spectrophotometer • Select Measure Sample BELS Molar absorptivity (M^cm-1) 1270 GO TO PHASE 10 Prepared solutions, absorbance, and calculated [FESCN2*] PHASES
EQUILIBRIUM · EQUILIBRIUM CONSTANT (SPECTROPHOTOMETRY) SUBMIT INTRODUCTION LABORATORY SIMULATION PHASE 9: A Lab Data - X Determine concentration of FESCN2+ Prepared solutions, absorbance, and calculated [FESCN<"] Verify your equilibrium concentration calculation. Did you report your data to the correct number of significant figures? Complete the following steps. Place all Wavelength: used glassware in Wash/Waste bin. concentration iron(I) nitrate 0.00400 447 nm 0.00400 0.00400 0.00400 0.00400 [Fe(NO3)3] (M) Use wipes to clean cuvettes Concentration potassium thiocyanate [KSCN] (M) ENTER WAVELENGTH 0.00400 0.00400 0.00400 0.00400 0.00400 Measure and record the absorbance for each sample in Lab Data Volume Fe(NO3)3 (mL) 5.00 5.00 5.00 5.00 5.00 Absorbance: Volume KSCN (mL) 5.00 0.165 4.00 3.00 2.00 1.00 • Place cuvette containing solution into Volume DI water (mL) 0.00 1.00 2.00 3.00 4.00 MEASURE SAMPLE spectrophotometer • Select Measure Sample • Remove cuvette from Initial concentration [Fe3+] (M) .00200 .00200 .00200 .00200 .00200 Initial concentration [SCN'] (M) .00200 .00160 .00120 .000800 .000400 CALIBRATED spectrophotometer and place in cuvette rack Absorbance 0.784 0.587 0.474 0.369 0.165 Equilibrium (FesCN2*] (M) Calculate iron(III) thiocyanate complex ion concentration (in Equilibrium constant K. M) for each solution. Record in Lab Data Average K. BELS GO TO PHASE 10 How to calculate iron(IIl) thiocyanate complex ion concentration for stock solution PHASES 11
Transcribed Image Text:EQUILIBRIUM · EQUILIBRIUM CONSTANT (SPECTROPHOTOMETRY) SUBMIT INTRODUCTION LABORATORY SIMULATION PHASE 9: A Lab Data - X Determine concentration of FESCN2+ Prepared solutions, absorbance, and calculated [FESCN<"] Verify your equilibrium concentration calculation. Did you report your data to the correct number of significant figures? Complete the following steps. Place all Wavelength: used glassware in Wash/Waste bin. concentration iron(I) nitrate 0.00400 447 nm 0.00400 0.00400 0.00400 0.00400 [Fe(NO3)3] (M) Use wipes to clean cuvettes Concentration potassium thiocyanate [KSCN] (M) ENTER WAVELENGTH 0.00400 0.00400 0.00400 0.00400 0.00400 Measure and record the absorbance for each sample in Lab Data Volume Fe(NO3)3 (mL) 5.00 5.00 5.00 5.00 5.00 Absorbance: Volume KSCN (mL) 5.00 0.165 4.00 3.00 2.00 1.00 • Place cuvette containing solution into Volume DI water (mL) 0.00 1.00 2.00 3.00 4.00 MEASURE SAMPLE spectrophotometer • Select Measure Sample • Remove cuvette from Initial concentration [Fe3+] (M) .00200 .00200 .00200 .00200 .00200 Initial concentration [SCN'] (M) .00200 .00160 .00120 .000800 .000400 CALIBRATED spectrophotometer and place in cuvette rack Absorbance 0.784 0.587 0.474 0.369 0.165 Equilibrium (FesCN2*] (M) Calculate iron(III) thiocyanate complex ion concentration (in Equilibrium constant K. M) for each solution. Record in Lab Data Average K. BELS GO TO PHASE 10 How to calculate iron(IIl) thiocyanate complex ion concentration for stock solution PHASES 11
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