Add a two-gram sample of each of the above compounds to each test tube. 3. Stir the samples. 4. In the chart provided record if each compound is solubility in water.
Resolution of Matter into Pure Substances – Paper Chromatography Abstract The purpose of this laboratory was to determine how different substances have different solubilities in a given solvent. This was accomplished using the method of chromatography. The solubility of each substance was first determined by dropping a drop or two of each on a line drawn 2 inches above the bottom of a piece of paper. Then the paper was lightly bent in order to tape both sides of the paper leaving about a 4 centimeter gap so that the sides of the paper are not touching. The paper was then put into a beaker of a hydrochloric acid, ethanol, and butanol mixture, being sure that the paper does not touch the sides of the beaker, and then topped.
The CEC experiment tested the CEC of three different soils which were Drummer, Cisne, and Sand. The experiment was performed in a couple steps. First the soils were washed in ammonium acetate and then rinsed with alcohol. The soil was then placed in a jar containing KCL, followed by 1 scoop of MgO powder. Boric acid was then placed in a small dish that was suspended above the soil and solution.
The aim of this practical was to investigate and inspect the solubility of unlike alcohols in distilled water. We concluded in our Hypothesis that alcohols have three options depending on the alcohols solubility. They either dissolved, partially dissolved or did not dissolve at all. Apparatus Five 20ml glass beakers Methanol, pentanol, ethanol, propanol, butanol, glycerine. Distilled water Dropper 2x 5 mL measuring cylinders Method Step 1) Pour 5 mL of distilled water into the 5mL measuring cylinder.
Then by writing a balanced chemical equation and using the titration formula, Nb+Ma+Va=Na+MbVb , the molarity is able to be determined. Procedure: 1) Using the graduated cylinder add 10.0 mL of water into the Erlenmeyer flask. 2) Add 5.0 mL of HCl into the flask using another graduated cylinder because acid goes into water when mixing them. 3) Add three drops of phenolphthalein indicator into the flask. 4) Swirl the flask in circular movements to mix the substances.
Materials * Blood smear (On the slide with having well-feathered edge.) * Alcohol Acetone (Fixative solution) * Eosin solution (fluorescent red dye) * New methylene blue (Organic staining agent) * Staining rack (To place solutions) * Bottled or running water (To rinse excessive solutions) * Absorbent paper (To remove or absorb excessive solutions) Steps of the procedure 1. Dip the slide into the alcohol acetone 3-5 times as the speed of second and remove the excessive solution with a paper towel. 2. Dip the slide into Eosin solution for 7 times and remove the excessive solution with a paper towel.
Pour all the filtrate and washings into a 250cm3 volumetric flask. Make up to 250cm3 with 1.0mol dm-3 sulphuric acid(VI) acid. Stopper the flask and invert several times to thoroughly mix the solution. 5. Fill the burette with 0.005mol dm-3 potassium manganate(VII) solution.
The buret had used the NaOH thoroughly rinsed three times because at the first titration the NaOH solution was used. About 50Ml the NaOH solution was in a clean beaker and brought it to experiment area. A funnel was used to fill the NaOH into the buret and recorded the initial volume on the buret to the correct number of significant figures. A pipette was used to take 10.00ml HCl into a clean 50mL Erlenmeyer flask. Three drops of phenolphthalein indicator was added into the HCl solution.
* The sodium carbonate solution was poured into the beaker with the calcium chloride solution. * A sheet of filter paper was folded in half twice and weighed. (1.1g)/(0.7g) * The filter paper was placed in a funnel in a paper cup. * The contents of the beaker were swirled to dislodge any participate from the sides and then slowly poured through the funnel. * 5ml of distilled water was poured down the sides of the beaker, swirled and poured into the funnel.
For the third part of the experiment, the process of part 1 was repeated using sodium hydroxide. 5 drops of 0.10 M sodium hydroxide were placed in wells 1 and 2, and 5 drops of distilled water were placed in wells 2 through 6. A toothpick was used to stir the mixture in well 2, resulting in 0.05 M of sodium hydroxide. A pipet was used to extract the solution from well 2 and 5 drops were added to well 2. The dilution process was repeated for the remaining wells, as completed in part 1.