By ways of decanting (using a class stirring rod to guide solution), pour the solution into the funnel until it is about half an inch from the top. The solution should be clear and colorless 8) Allow the flask to cool. While the flask and solution are cooling, wash the funnel and beaker with LOTS of tap water to remove all traces of KOH. Also throw away any carbon on the filter paper. 9) Once the solution is cool enough to touch, add 35mL of 3M H2SO4 (measured out in 50mL graduated cylinder) SLOWLY AND STIR CONSTANLY.
The column is now ready for the addition of the mixture to be separated. 2.) Separation of the Fluorene and 9-Fluorenone Mixture: Accurately weigh 0.1g of the 1:1 mixture of fluorene and 9-fluorenone mixture, place it in a small test tube, and dissolve it in 0.5mL of petroleum ether. Add a few drops of dichloromethane, just enough to effect solution. Transfer the solution to the top of the column with a Pasteur pipet.
Add 3.0 mL of 1.0 M Copper (II) nitrate to the test tube. Add 5.0 mL of sodium hydroxide to the test tube; mix the reaction with a stirring rod. Feel the bottom of the tube and write down any changes you notice. Place test tube into the heated beaker and heat the tube until no changes are happening. Write down everything you notice.
After that we added 4.99 mL of deionized water to the boiling tube and began swirling the substances until the reaction was completed. There was a slight discoloration in the water, the tube became a “contaminated color” of water and dust. Next we added 2.8 mL of deionized water and mixed by swirling again. Still no tangible precipitate had formed so we continued adding deionized water in 5 mL increments. We did this twice adding 5 mL at a time until we observed a web like substance appear in the tube.
After gathering the materials, the first part was to place the beaker (which is attached to the ring stand) on top of the hot plate. Next, a fume hood was made by using a funnel, rubber tubing, and aspirator. Copper was then measured to .2544 grams and was poured that into the beaker. After that, 5 mL of HNO3 was poured into the copper with the aspirator turned on. Once the dissolving completed, 10 mL of distilled water was poured into the solution.
| Experiment #3Weight of Zinc: 2.0 gramsWeight of Iodine: 1.1 gramsExperiment #6Weight of Zinc: 2.02 gramsWeight of Iodine: 2.5 grams | 3. Then add 5 mL of acetic acid (acidified water) into the “R” boiling tube, and then after you pour it swirl vigorously. Continue swirling until the tube turns back into room temperature. Then you have to decant the solution in boiling tube “R” into boiling tube “P” without any granular zinc leaving boiling tube “R”. Then wash the zinc in the boiling tube “R” by adding 5 mL of acidified water, swirling and then decanting the solution into the “p” boiling tube.
| Experiment #3Weight of Zinc: 2.0 gramsWeight of Iodine: 1.1 gramsExperiment #6Weight of Zinc: 2.02 gramsWeight of Iodine: 2.5 grams | 3. Then add 5 mL of acetic acid (acidified water) into the “R” boiling tube, and then after you pour it swirl vigorously. Continue swirling until the tube turns back into room temperature. Then you have to decant the solution in boiling tube “R” into boiling tube “P” without any granular zinc leaving boiling tube “R”. Then wash the zinc in the boiling tube “R” by adding 5 mL of acidified water, swirling and then decanting the solution into the “p” boiling tube.
Once the copper had reacted completely, the fume hood was removed and 10 mL of distilled water was added to the beaker. 6 M NaOH was then added drop wise until the solution turned red litmus paper blue. Once this happened, the solution was heated on medium level and constantly stirred with a stir bar until the solution turned black and then sat to cool for about two minutes. Distilled water was added periodically throughout heating to ensure the solution didn’t dry out. After the solution had cooled, the excess liquid was decanted out by slowly pouring it out
Allow the splint to burn until the color fades. Don’t let any solids to fall into the burner. -Soak the wooden splint in the “rinse water” to put it out completely; move it to trash. -Record observations on flame color produced by the metallic salt in the Data Table. -Repeat above steps (middle section) for all metallic salts (five total).
The aspirator was turned on and 4mL of 6M HNO3 was slowly added to the beaker. Once the copper was completely dissolved in the aqua-blue mixture, 10mL of distilled water was added to the beaker. While stirring the solution 6M NaOH was added drop wise until placing a small drop of the reaction solution on red litmus paper turned the paper blue. The solution was then heated on the hot plate, with continuous stirring until the solution turned black. Once the solution was black, the solution was removed from the hot