Part A Procedures Observations 1. Put 400 mL of tap water into a beaker. Heat it on a hot plate until it starts to boil. 2. Put a rubber-stopper assembly into a 125 mL Erlenmeyer flask. Twist the stopper into the flask's neck until it is tightly secured. Connect the connector and the gas pressure sensor valve, then twist in a clockwise motion. Prevent gas leakage by covering the stopper and flask's top with parafilm. Twist the white valve until it is perpendicular to the valve stem in order to
buret, and the buret was cleaned with it. The contents were spilled out into the sink. The 125 mL Erlenmeyer flask was washed with distilled water. The contents were spilled out into the sink. The 50 mL beaker was filled with 50 mL of sodium hydroxide. The sodium hydroxide was poured into the buret, it was ensured that the buret read zero. The buret was placed in the buret holder and the Erlenmeyer flask was placed to help adjust the height of the buret. One antacid tablet was taken out of one of the
was poured inside the Erlenmeyer flask. Weight of the container with this solution was 103 g. The flask was closed with a stopper (cork?) and the total weight increased to 103.161 g. 0.25 g of Zinc was added to the solution. The maximum temperature was observed at 26.5° C with the final weight of the container at 103.411 g. The same steps were repeated while adding 25 g of Zink to the solution and resulted in explosion while performed in a closed flask. Meanwhile, when the flask was not closed, 25 g
the mass of the products to remain the same when chemically combined in a closed environment. One can clearly see this is the case since the law states that mass should remain the same, in theory. OBSERVATIONS As one can clearly see, the closed Erlenmeyer flask lost no mass. For example, the total mass before mixing was 180.9g and 180.9g after mixing. The law of Conservation of Mass was obeyed in this lab. The results prove the law of Conservation of Mass because one can clearly see that regardless
The objective of this experiment was to perform extraction. This is a separation and purification technique, based on different solubility of compounds in immiscible solvent mixtures. Extraction is conducted by shaking the solution with the solvent, until two layers are formed. One layer can then be separated from the other. If the separation does not happen in one try, multiple attempts may be needed. The experiment was conducted in three parts: Part A of the experiment consisted of extracting
Analysis of a Household Acid: Titrating Vinegar” by the Department of Chemistry at APSU. The first procedure requires one 10mL volumetric pipette, one 50mL buret, two small beakers, one labeled “vinegar” and the other labeled “NaOH”, three 250mL Erlenmeyer flasks, labeled one, two and three, and one large beaker for waste collection. Collect 50mL of vinegar in the beaker labeled “vinegar” and record the brand and listed concentration of vinegar. Then collect about 60mL of NaOH in the beaker labeled “NaOH”
Burette • Three 250ml Erlenmeyer flasks • 10ml pipette and pipette bulb • Wash bottle • Funnel • Retort stand and clamps Procedure: 1. Clamp the 50ml burette to the retorted stand and add the sodium hydroxide solution (base) using a funnel. 2. Clean one of the Erlenmeyer flasks using a wash bottle and add 10ml of Acid “A” into it. Use the pipette to accurately measure 10ml before adding it to the flask. 3. Add 2-3 drops of phenolphthalein indicator into to the Erlenmeyer flask containing the Acid
beaker filled halfway with water. The bath was then sat on a hot plate and lest to boil. 2g of salicylic acid was placed in a 125 mL Erlenmeyer flask with 3 mL of acetic anhydride, and 3 drops of concentrated sulfuric acid. The solutions were mixed and placed in the boiling water bath. The solution was left in the boiling bath for 30 minutes. The 125 mL Erlenmeyer flask was removed and placed on the side to cool to room temperature. Once cooled the solution was placed into a 150 mL Beaker that was filled
and then twice with approximately 5 mL of ~0.25 M NaOH solution (Fisher Scientific, Certified ACS Pellets, S318-3). A 125 mL Erlenmeyer flask (Fischer) was obtained and 0.999 g of potassium hydrogen phthalate (KHP, C8H5KO4) (Acros Organics, 99+%, Code: 417955000, Lot: A0358893) was added. A precision balance
the crude sample, and a 98% yield of naphthalene and benzoic acid, which is great as far as results go. It means enough hydrochloric acid, HCl, was added for the conjugate acid, benzoic acid, of the base, benzoate that was in the aqueous layer Erlenmeyer flask before the addition of the acid. The separation of naphthalene and benzoic acid seemed successful as far as turnout of product came. Out of the 1.00 g of crude sample started with, 0.40 g of naphthalene was recovered and 0.58 g of benzoic acid
and placed in a pre-weighed 25 mL round bottom flask, along with 2.5 mL of glacial acetic acid and a magnetic stir bar. Then the reaction apparatus was assembled, the dry tube was charged with conc. sodium bi sulfate, the 25 mL round bottom was attached to the apparatus, and 5 mL of Br2/HBr mixture was obtained and placed in the round bottom. The reaction took place for 20 minutes. An orange liquid was obtained and placed in a 125 mL Erlenmeyer flask along with 25 mL of water and 2.5 mL of conc. Sodium
This was repeated two more times for a total of three flasks. A flask was placed on a hot plate and heated until it was at 80 C. As the solution was heated a burette was filled with a KMno4 solution. After the solution was at the required heat a magnetic stir bar was added to create a whirlpool. The KMno4 was then titrated into the solution until the heated solution turned light pink in color. This process was repeated for the two other flasks. The average molarity was then found for the kMno4
0020) mol L-1. The amount of sodium carbonate in the conical flask from A-E was 0.113 g, 0.195 g, 0.1368 g, 0.1872 g and 0.1898 g respectively. Results: To obtain a concentration value for the HCl a solution of (0.1008 ± 0.0020) mol L-1 HCl was titrated with Na2CO3 with methyl orange to give a
Marble Chips Experiment Pilot Aim: To investigate how the concentration of hydrochloric acid affect the speed of reaction with marble chips. Prediction: I predict that the more hydrochloric acid there is the faster the chemical reaction. I also predict that the more dilute the acid is (the more water there is with the acid) the slower the chemical reaction. Hypothesis: I predicted what I did because the more concentrated the hydrochloric acid is the more energy there will be and
Hydrochloric Acid of 3 different concentrations as following 2 molar, 0.5 molar and 0.1 molar. In order to calculate the results must be within 0.05cm3 of each other. Apparatus Burette Volumetric Pipette Beakers Conical Flasks Volumetric Flasks Funnel Clamp Stand White Tile Fair Test For a fair test I will have to make sure that I change the equipment for each test so that the residue of the last test doesn't alter my results and also I must use the same amounts
graph to interpret them. However before I gather my results I will repeat the experiments for reliability and accuracy. Apparatus/Equipment The following apparatus is what I need for this experiment: * 3 measuring cylinders * 2 conical flasks * 1 stopwatch
becomes easily spoiled. Equipment/ Apparatus: * Yeast Culture * Apple Juice * Calcium Chloride Solution * Sodium Alginate Solution * Distilled Water * Limewater * Disinfectant * 2 Conical Flasks (250cm³) * 1 Bung and Delivery Tube * 2 Conical Flasks (100cm³) * 250cm³... ... middle of paper ... ...d this way they are capable of gathering oxygen. My results came out slightly incorrect because the growth of the yeast population was slightly wrong, this was
or in quarters. After that I will then add the Alka-Seltzer tablets inside of the balloon.(¨Bubbles, Gas, and Balloons¨) I am going to measure the amount of gas bubbles the Alka-Seltzer tablet gives off by attaching a balloon to the top of my Erlenmeyer flask and then measure the circumference. ALKA-SELTZER The Alka-Seltzer tablet is a medicine tablet taken by people as an antiacid to help calm down stomach acids which can lead to heartburn.(¨Carbonation Countdown¨) The Alka-Seltzer tablet is
250-mL Erlenmeyer flask, hot plate, ring stand, 250-mL beaker, stirring rod, balance, Büchner funnel, filter paper, stopper, water aspirator, watch glass, fume hood, 10 mL and 50 mL graduated cylinder. To synthesize aspirin a boiling-water bath was prepared by adding 300-mL tap water to the 600-mL beaker and placed on a hot plate with a ring stand around the beaker. Then 2.1g of salicylic acid, 4-mL acetic anhydride, and 5 drops of concentrated H2SO4 solution were added to the Erlenmeyer flask and
barbier reaction: In a 50 mL round bottom flask that had a reflux condenser attachment, saturated ammonium chloride (5 mL), THF (1 mL), zinc powder (0.4 g), benzaldehyde (0.500 mL, 0.5225 g, 4.92 mmol), and allyl bromide (0.470 mL, 0.6533 g, 5.40 mmol) were charged with stir bar and stirred at room temperature for 45 minutes. Diethyl ether (10 mL) was added to the reaction mixture and stirred. The mixture was gravity filtered into a beaker that was topped with a watchglass. The filtrate was transferred