Iron(III) chloride-thiocyanate system 1. Prepare a stock solution by adding 2 mL 0. 1 M FeCl̟ and 2 mL 0.1 M KSCN to 100 ml distilled water in a 250 – ml beaker. Note: The instructor will assign only one pair to prepare this stock solution for the whole class. 2. Prepare 4 test tubes (T1,T2,T3,T4). To each of the test tubes, add 2 mL of the stock solution. T1 will serve as the control. 3. To T2, add 10 drops 0. 1 M FeCl, To T3, add 10 drops 0. 1 M KSCN. To t4, add 3 drops 2.0 M NaOH. 4. Observe the colors of solutions and solids formed, if any. Test Tube 1 2 3 4 Observations (relative to control) Give the reaction equilibrium that describes this system:

Iron(III) chloride-thiocyanate system 1. Prepare a stock solution by adding 2 mL 0. 1 M FeCl̟ and 2 mL 0.1 M KSCN to 100 ml distilled water in a 250 – ml beaker. Note: The instructor will assign only one pair to prepare this stock solution for the whole class. 2. Prepare 4 test tubes (T1,T2,T3,T4). To each of the test tubes, add 2 mL of the stock solution. T1 will serve as the control. 3. To T2, add 10 drops 0. 1 M FeCl, To T3, add 10 drops 0. 1 M KSCN. To t4, add 3 drops 2.0 M NaOH. 4. Observe the colors of solutions and solids formed, if any. Test Tube 1 2 3 4 Observations (relative to control) Give the reaction equilibrium that describes this system:

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter5: Errors In Chemical Analyses

Section: Chapter Questions

Problem 5.10QAP

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