Erlenmeyer flask

The materials used in this project were general protective personal equipment such as lab coat, gloves and googles, 125 milliliter Erlenmeyer flask, 50 milliliter burette, 50 milliliter beaker, graduated cylinder, scale, vitamin c, phenolphthalein, methyl orange, deionized water and the following chemicals: sodium hydroxide, potassium hydrogen phthalate, hydrochloric acid and sodium bicarbonate. When it comes to these chemicals, make sure to wear the general protective personal equipment and…

500mL volumetric flask using gravity filtration; then filled to the line and mixed. To ensure a quantitative transfer, only instruments were rinsed into the flask. Then, a rinsed, 25mL pipette was used to transfer the previously made KIO3 into a 125ml Erlenmeyer flask. Subsequently, using a scoop, approximately 0.2g potassium iodide (KI); along with, using a transfer pipette, 1 mL 1M sulfuric acid (H2SO4). Finally, 10mL of the prepared Vitamin C solution was added to the Erlenmeyer flask and…

Thiosulfate and dispensed over the Erlenmeyer flask drop by drop while the flask was being swirled during the titration (after each drop was added) to mix the contents well until the solution was a very faint yellow while it is sat on a white paper towel to see the exact color. The titrator was then set aside to be used again with the same bottle sample that it began with when it was completely full. Eight drops of Starch Indicator Solution were added and swirled in the flask, this caused the…

Danika Ng CHEM 1252 L Exp 12: Thermodynamic Analysis of Chemical Equilibria INTRODUCTION The reaction being done with borax and HCl is an acid base reaction. The K constant expression of the reaction is Kc = [Na^+][B4O7^-2]. A titration is needed for this experiment because when a strong acid with a known concentration is added to a weak base, the unknown concentration of the weak base can be found, which can then find the moles of the weak base, which can then find the Kc. The first law of…

oxalate solution, beakers (different sizes) , flasks(Erlenmeyer flasks) , test tubes, thermometer, hot plate, watch glass, Pasture pipettes, rubber policeman, boiling chips, labeling tube, small mortar and pestle and 4 glucose urinalysis test strips. This experiment was separated into three different separations. During the first separation the lab groups were to obtain 100 mL of whole milk into a 250 mL Erlenmeyer side arm flask. Then, heat the flask to precisely 40°C and make sure not exceed…

250-mL beaker and fill it with water just half way. We then had to put the bottom of the beaker right on the flame for one second. We did this so we can observe what happens to the bottom of the flask once it hits the flame. 5. Next, we had to pour the water into the petri dish. Finally we put the 500-mL flask over the candle. We had to observe what happened to the candle during that time period. We did this so we can see what happens when a flame is cut from oxygen. Results: Table A-…

added DI water (deionized water) till the indicated mark. Make sure to invert the volumetric flask at least ten times this will insure that the solution is fully mixed. Weight out approximately 1g solid KI. Use a pipet to obtain and transfer 25mL of diluted bleach into an Erlenmeyer Flask, also add the solid KI and about 25 mL of DI water. Swirl the flask to make sure the KI is dissolved. Take your flask to the fume hood and add approximately 2mL of the 3M HCl, the solution should turn a…

Exactly 5.00 mL of milk was pipetted into a clean 250 mL Erlenmeyer flask and 100 mL of distilled water was added, as well as 10 mL of buffer solution, 1 mL MgEDTA, and 5-6 drops of Eriochrome Black T indicator. The initial volume of the EDTA in the burette was recorded and then the titration started and continued…

Abstract The Purpose of experiment is to introduce the technique of crystallization, by following methods to purify the antibiotic sulfanilamide away from acetanilide. From the laboratory experiment, 0.51 g of impure sulfanilamide was at first measured and experienced in the crystallization procedure. Because of different steps of the experiment, the last mass of the crystal was 0.22g. This demonstrates the procedure decreased the underlying mass by 0.28g which mean the 43.13% recovery using…

temperature, which is measured with a temperature probe. Two areas remain constant throughout this experiment, which are volume of the gas and the number of molecules the gas itself contains. In this experiment, using the constructed apparatus, an Erlenmeyer flask with an air sample will be placed in four different water baths, which vary in temperature. Following this, a mathematical relationship between pressure and absolute temperature of a gas can be determined. This data will be used to…