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.
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.
Taking the A train Chemistry Lab 106 Lab Report: Taking the A train Experimental Procedure/Observation for Part I In this experiment our objective was to determine why we used acidified water when we reacted zinc with iodine. We began by weighing an empty boiling tube which was 40.99 grams. Next we added two grams of granular zinc to the aforementioned boiling tube. Then, we added two grams of iodine to the boiling tube already containing the zinc. After that we added 4.99 mL of deionized water to the boiling tube and began swirling the substances until the reaction was completed.
Add 1.0M copper (II) nitrate to the first mark on the test tube. 4. Add 1.5M sodium hydroxide to the second mark on the test tube. Mix with the stirring rod. Touch the bottom of the outside of the test tube to see if heat has been released.
| 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.
Hypothesis If we can identify the color of flame after burning the atoms of metal, then we can determine the amount of energy in the photon. Materials/Supplies list * Calcium chloride * Copper chloride * Iron chloride * Lithium chloride * Potassium chloride * Sodium chloride * Strontium Chloride * Unknown 1 * Unknown 2 * Unknown 3 * Unknown 4 * Bunsen burner and accessories * Safety goggles * Lab apron * Splints soaked overnight in distilled water * 250 mL beaker half full of distilled water * 250 mL beaker half full of clear water Procedures: 1. Wear the safety goggles and the lab apron on. 2. Label the test tubes with the names of the solutions and unknowns, write on the note.
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
Steam is introduced to the distillation system. Therefore the boiling point of the compound is depressed and allows it to evaporate at lower temperature before the compound becomes inappreciable. The retention got for this lab was 0.216 for the solvent and the limonene is 1.000. To extract the solvent, dichloromethane was added and the aqueous mixture was extracted. Then, magnesium sulfate was added as a drying agent to remove
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