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Reference Reference Reference 10 drops waley color: 1 8 drops Fe CNO3)2 Dork Red Dark Red. Forward Reaction Forward Reaction Forword 8 drops KSCN Dork Red Dork Red Forward Reaction 3 Reaction Backward 8 drops Light Backward clivection 4. Ororge Oronge direction HCI lo drops H0+ Heat Light o ronge Light Oronge lo drops Doik Red Dork Oronge Red 6. H2 O+ Cald Questions: 1. Show calculations for making the 0.01 M solutions of Fe(NO3)3 and KSCN.

Reference Reference Reference 10 drops waley color: 1 8 drops Fe CNO3)2 Dork Red Dark Red. Forward Reaction Forward Reaction Forword 8 drops KSCN Dork Red Dork Red Forward Reaction 3 Reaction Backward 8 drops Light Backward clivection 4. Ororge Oronge direction HCI lo drops H0+ Heat Light o ronge Light Oronge lo drops Doik Red Dork Oronge Red 6. H2 O+ Cald Questions: 1. Show calculations for making the 0.01 M solutions of Fe(NO3)3 and KSCN.

Chemistry by OpenStax (2015-05-04)
Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 17E: Would the amount of heat absorbed by the dissolution in Example 5.6 appear greater, lesser, or...
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4, Change Reference 10 drops water 1 color: Reference Reference 8 drops Fe CNO3)2 Dark Red Dark Red. Forward Reacion Foraward Reaction Forword 8 drops KSCN Dork Red Dank Red Forwarod Reaction Reaction 8 drops Light Light Backward Backward of the HCI Oronge Oronge dlirection direction nger lo drops H0+ Heat Light Oronge Light o 1onge lo drops HO+ Cad Doik Red Dork Oronge Red Questions: 1. Show calculations for making the 0.01 M solutions of Fe(NO3)3 and KSCN.
Transcribed Image Text:4, Change Reference 10 drops water 1 color: Reference Reference 8 drops Fe CNO3)2 Dark Red Dark Red. Forward Reacion Foraward Reaction Forword 8 drops KSCN Dork Red Dank Red Forwarod Reaction Reaction 8 drops Light Light Backward Backward of the HCI Oronge Oronge dlirection direction nger lo drops H0+ Heat Light Oronge Light o 1onge lo drops HO+ Cad Doik Red Dork Oronge Red Questions: 1. Show calculations for making the 0.01 M solutions of Fe(NO3)3 and KSCN.
When the system contains mostly of reactants, the solution is yellow. When the system shifts towards products, the color changes to red. By observing the color change, we can see the shift in the equilibrium between reactants and products. Addition of hydrochlorie acid provides chloride ions, which produce FeClá (a complex ion) when combined with iron (III) ions. This is a side reaction that removes the Fe* ions as shown in equation (2). This disrupts the equilibrium established in the main reaction (1). The main equilibrium will shift back to the reactants. Fe* (aq) + yellow CF (aq) = FeCla" (aq) colorless (2) colorless Materials Equipment small beaker 6 x test tubes 5х test tube rack pipettes 2 x 250 mL beakers ice Chemicals 0.01 M Fe(NO3)3 3M HCI 1M Fe(NO3)3 IM KSCN 0.01 M KSCN Procedure 1. Make 50 mL of a 0.01 M Fe(NO3)3 and 50 mL of a 0.01 M KSCN from the provided 1.0 M solutions. 2. In a small beaker mix 10 mL of 0.01 M Fe(NO3)3 and 10 mL of 0.01 M KSCN. This is your “stock" solution. 3. Set up 6 test tubes on a rack. To each test tube add 3 mL of the stock solution you just made. 4. Add 10 drops of water to test tube 1. Record the color of the solution. This is your control sample and you will compare the colors of all other test tubes to this test tube. 5. Add slowly 8 drops of 1 M Fe(NO3)3 to test tube 2. Be sure to mix the contents by flicking the bottom of the test tube with the tip of one finger while holding the top of the test tube with your thumb and index finger of your other hand. Record the color of the solution and compare it to test tube 1. 6. Add slowly 8 drops of 1 M KSCN to test tube 3. Mix as before and record the color you observe and any change in color. 7. Add slowly, 8 drops of 3 M HCl to test tube 4. Mix as before and record the color observed and any change in color 8. To test tube 5, add slowly 10 drops of water and place this test tube in a hot water bath (a beaker with hot water). After 10 minutes, record the color observed any change in color. 9. To test tube 6, add slowly 10 drops of water and place this test tube in a cold water bath (a beaker containing a mixture of ice and water). After 10 minutes, record the color observed any change in color. 10. Repeat steps 2-9 again. You should have enough stock solution. 11. Disposal: All the solutions must be disposed of in the properly designated waste container.
Transcribed Image Text:When the system contains mostly of reactants, the solution is yellow. When the system shifts towards products, the color changes to red. By observing the color change, we can see the shift in the equilibrium between reactants and products. Addition of hydrochlorie acid provides chloride ions, which produce FeClá (a complex ion) when combined with iron (III) ions. This is a side reaction that removes the Fe* ions as shown in equation (2). This disrupts the equilibrium established in the main reaction (1). The main equilibrium will shift back to the reactants. Fe* (aq) + yellow CF (aq) = FeCla" (aq) colorless (2) colorless Materials Equipment small beaker 6 x test tubes 5х test tube rack pipettes 2 x 250 mL beakers ice Chemicals 0.01 M Fe(NO3)3 3M HCI 1M Fe(NO3)3 IM KSCN 0.01 M KSCN Procedure 1. Make 50 mL of a 0.01 M Fe(NO3)3 and 50 mL of a 0.01 M KSCN from the provided 1.0 M solutions. 2. In a small beaker mix 10 mL of 0.01 M Fe(NO3)3 and 10 mL of 0.01 M KSCN. This is your “stock" solution. 3. Set up 6 test tubes on a rack. To each test tube add 3 mL of the stock solution you just made. 4. Add 10 drops of water to test tube 1. Record the color of the solution. This is your control sample and you will compare the colors of all other test tubes to this test tube. 5. Add slowly 8 drops of 1 M Fe(NO3)3 to test tube 2. Be sure to mix the contents by flicking the bottom of the test tube with the tip of one finger while holding the top of the test tube with your thumb and index finger of your other hand. Record the color of the solution and compare it to test tube 1. 6. Add slowly 8 drops of 1 M KSCN to test tube 3. Mix as before and record the color you observe and any change in color. 7. Add slowly, 8 drops of 3 M HCl to test tube 4. Mix as before and record the color observed and any change in color 8. To test tube 5, add slowly 10 drops of water and place this test tube in a hot water bath (a beaker with hot water). After 10 minutes, record the color observed any change in color. 9. To test tube 6, add slowly 10 drops of water and place this test tube in a cold water bath (a beaker containing a mixture of ice and water). After 10 minutes, record the color observed any change in color. 10. Repeat steps 2-9 again. You should have enough stock solution. 11. Disposal: All the solutions must be disposed of in the properly designated waste container.
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