Trayc Poppenhager
May 5, 2015
TA: GK
Chem 341
Thermodynamics and Kinetic Control
Goal: The overall goal of this experiment was to learn and observe about kinetic and thermodynamic control of different reactions by noticing which product forms faster or slower and possibly which reaction is more stable than the rest of the reactions.
Significance:
Organic chemists find using kinetic and thermodynamic control useful because they use the concept of the reactions to figure out reactions that are being used at the same time or experiment, that overcome or trump the set of reactants used in the experiment. Thermodynamic control and kinetic control can determine or decide the structure or arrangement in a reaction’s product …show more content…
Name this solution as solution W so there is less confusion later on during the procedure. Next, obtain 3 ml of cyclohexanone and 2.5 ml of 2-furaldehyde in 15 ml 95% ethanol. Name this solution E for less confusion later on during the procedure. Once this step is complete, 25 ml of the solution W and 5 ml of the solution E needs to be cooled in an ice-bath, but make sure that the 5 ml and the 25 ml are separated and not added together while being cooled. Once both of the solutions are cooled, it is time to add solution E to the solution W and stir the mixture. It should be noticed that crystals should form almost simultaneously. Next, this needs to be in an ice-bath again for another 3-5 minutes. Once the time is up, vacuum filtrate the solution and obtains the crystals from this. Make sure while vacuuming it, to add water and rinse it with about ml of water the most. Once the vacuum filtration is complete, air-dry the crystals before weighing them or getting the melting …show more content…
Next, for this step 2, weigh out only 5 ml of the solution E and only 25 ml of solution W at room temperature and mix them together. In about 2 minutes, crystals should be noticed but let this sit for 5 minutes. Once the 5 minutes is over, cool the mixture of the two solutions in an ice-bath for 5 minutes the most and then vacuum filtrate the solution to get the crystals that formed. Once the vacuum filtration is done, make sure to air-dry the crystals and then get the melting point and weight of them.
3. For this last step, measure out 25 ml of solution W into a beaker and warm it by using the hot plate and boiling it, then measure out 5 ml of solution E separately, and put it into another test tube and heat this solution to a boil as well. Once boiling occurs, add the two together and boil again for 10-15 minutes. Once this is done, let the solution cool to room temperature and then put it in an ice-bath for 5-10 minutes. After the 5-10 minutes, vacuum filtrate and get the crystals. Once the crystals are formed, let them dry, and then get the weight and boiling point of them.
Part
May 5, 2015
TA: GK
Chem 341
Thermodynamics and Kinetic Control
Goal: The overall goal of this experiment was to learn and observe about kinetic and thermodynamic control of different reactions by noticing which product forms faster or slower and possibly which reaction is more stable than the rest of the reactions.
Significance:
Organic chemists find using kinetic and thermodynamic control useful because they use the concept of the reactions to figure out reactions that are being used at the same time or experiment, that overcome or trump the set of reactants used in the experiment. Thermodynamic control and kinetic control can determine or decide the structure or arrangement in a reaction’s product …show more content…
Name this solution as solution W so there is less confusion later on during the procedure. Next, obtain 3 ml of cyclohexanone and 2.5 ml of 2-furaldehyde in 15 ml 95% ethanol. Name this solution E for less confusion later on during the procedure. Once this step is complete, 25 ml of the solution W and 5 ml of the solution E needs to be cooled in an ice-bath, but make sure that the 5 ml and the 25 ml are separated and not added together while being cooled. Once both of the solutions are cooled, it is time to add solution E to the solution W and stir the mixture. It should be noticed that crystals should form almost simultaneously. Next, this needs to be in an ice-bath again for another 3-5 minutes. Once the time is up, vacuum filtrate the solution and obtains the crystals from this. Make sure while vacuuming it, to add water and rinse it with about ml of water the most. Once the vacuum filtration is complete, air-dry the crystals before weighing them or getting the melting …show more content…
Next, for this step 2, weigh out only 5 ml of the solution E and only 25 ml of solution W at room temperature and mix them together. In about 2 minutes, crystals should be noticed but let this sit for 5 minutes. Once the 5 minutes is over, cool the mixture of the two solutions in an ice-bath for 5 minutes the most and then vacuum filtrate the solution to get the crystals that formed. Once the vacuum filtration is done, make sure to air-dry the crystals and then get the melting point and weight of them.
3. For this last step, measure out 25 ml of solution W into a beaker and warm it by using the hot plate and boiling it, then measure out 5 ml of solution E separately, and put it into another test tube and heat this solution to a boil as well. Once boiling occurs, add the two together and boil again for 10-15 minutes. Once this is done, let the solution cool to room temperature and then put it in an ice-bath for 5-10 minutes. After the 5-10 minutes, vacuum filtrate and get the crystals. Once the crystals are formed, let them dry, and then get the weight and boiling point of them.
Part