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4. Determine the initial concentrations of Fe" and SCN (before any reaction) and the equilibrium concentrations of FESCN (after the reaction has reached equilibrium) for the rest of the tubes in Part A. Refer to the volumes of Fe(NO). KSCN and water listed on page 3 (steps 2 and 3). Note that you already did tube 5 and that ALL tubes have the same [Fe"Jnit. [Fe linit [FESCN"leg Tube [SCN Jinit 2. 3 4. 6. 7.

4. Determine the initial concentrations of Fe" and SCN (before any reaction) and the equilibrium concentrations of FESCN (after the reaction has reached equilibrium) for the rest of the tubes in Part A. Refer to the volumes of Fe(NO). KSCN and water listed on page 3 (steps 2 and 3). Note that you already did tube 5 and that ALL tubes have the same [Fe"Jnit. [Fe linit [FESCN"leg Tube [SCN Jinit 2. 3 4. 6. 7.

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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5 Please answer #4 and #5 If any info is missing that is needed, leave a comment and I will update that.
4. Determine the initial concentrations of Fe and SCN (before any reaction) and the equilibrium concentrations of FeSCN" (after the reaction has reached equilibrium) for the rest of the tubes in Part A. Refer to the volumes of Fe(NO), KSCN and water listed on page 3 Lsteps 2 and 3). Note that you already did tube 5 and that ALL tubes have the same [Fe'"Jinit. ISCN Jinit |Fe"linit |FESCN leg Tube 3 4 6. 7 5. You will measure the absorbances of the solutions in test tubes 1-7 and enter the equilibrium concentrations of FeSCN to create a "standard curve." What is the purpose of creating the standard curve?
Transcribed Image Text:4. Determine the initial concentrations of Fe and SCN (before any reaction) and the equilibrium concentrations of FeSCN" (after the reaction has reached equilibrium) for the rest of the tubes in Part A. Refer to the volumes of Fe(NO), KSCN and water listed on page 3 Lsteps 2 and 3). Note that you already did tube 5 and that ALL tubes have the same [Fe'"Jinit. ISCN Jinit |Fe"linit |FESCN leg Tube 3 4 6. 7 5. You will measure the absorbances of the solutions in test tubes 1-7 and enter the equilibrium concentrations of FeSCN to create a "standard curve." What is the purpose of creating the standard curve?
Part A: Determination of the Standard Curve 1. You will be provided with burets filled with 8.00 x 104 M KSCN(aq) and water. Put your waste container below each buret and drain the liquid level down to 0.00 mL. As the liquid drains, gently tap the buret near the bottom to flush any air bubbles out of the tip. 2. Label your test tubes 1-7. Dispense the listed amount of 8.00 x 104 M KSCN(aq) and water into each test tube. Test Tube VKSCN (mL) VH2O (mL) 0.00 5.00 0.50 1.00 2 4.50 3 4.00 4. 1.50 2.00 3.50 5 3.00 2.50 3.00 6. 2.50 7 2.00 3. Collect approximately 40 ml of 0.100 M Fe(NO,).(aq) stock solution in the corresponding 100 mL beaker (pre-labeled for you). 4. Rinse the volumetric pipet designated for 0.100 M Fe(NOs); with a small amount of the solution. Use this pipet to transfer 5.00 ml. of 0.100 M Fe(NO)s to each test tube.
Transcribed Image Text:Part A: Determination of the Standard Curve 1. You will be provided with burets filled with 8.00 x 104 M KSCN(aq) and water. Put your waste container below each buret and drain the liquid level down to 0.00 mL. As the liquid drains, gently tap the buret near the bottom to flush any air bubbles out of the tip. 2. Label your test tubes 1-7. Dispense the listed amount of 8.00 x 104 M KSCN(aq) and water into each test tube. Test Tube VKSCN (mL) VH2O (mL) 0.00 5.00 0.50 1.00 2 4.50 3 4.00 4. 1.50 2.00 3.50 5 3.00 2.50 3.00 6. 2.50 7 2.00 3. Collect approximately 40 ml of 0.100 M Fe(NO,).(aq) stock solution in the corresponding 100 mL beaker (pre-labeled for you). 4. Rinse the volumetric pipet designated for 0.100 M Fe(NOs); with a small amount of the solution. Use this pipet to transfer 5.00 ml. of 0.100 M Fe(NO)s to each test tube.
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