Volumetric flask

methods, do differ a lot from one another. One of the reasons for this huge difference, was the use of a serological pipette instead of volumetric pipettes. For all transfer of solutions where a pipette was needed, a serological pipette was used. Now this could be one of the main causes of error in the data, because a serological pipette is not accurate, however a volumetric pipette is. This mistake may have also caused a correlation coefficient that’s not close to 1 or -1. And the concentration…

out 3 more times until there was no more iron present on the magnet. After the final extraction, pour the HNO3 solution into a 100 mL volumetric flask. Rinse the magnet three times with 10 mL of 1.0 M HNO3 and pour each rinse into the volumetric flask. After the three rinses, dilute the volumetric flask to the mark with 1.0 M HNO3. Using another 100 mL volumetric flask prepare 100 mL of a 0.10 M KSCN solution using 1.0 M HNO3 as the solvent. To prepare a 0.10 M KSCN solution, 0.97 g of KSCN was…

Purpose: The purpose of this experiment was to illustrate how to determine the density of a liquid and regulate volumetric glassware properly. To determine the mass of liquids using a scale, the density of water and (unknown) liquid D were weighed, inside of a volumetric flask. Once the mass was determined in grams, the density was easy to determine, by using the density equation. The second portion of this experiment was to calibrate a 10mL pipette. Once the density was determined for this…

Theophylline taken in to 100ml volumetric flask to which add 40ml of mobile phase [Acetonitrile-Water (40:60,v/v)] and sonicated for about 10 min then the final volume was made upto100 ml with the mobile phase and shaken then filtered through 0.45µ membrane filter. The filtered solution was further diluted in the diluent to make the final concentration. Preparation of Level – I (0.25ppm Of SS & 12.5ppm of TP) 2.5ml of stock solution was taken in to 100ml of volumetric flask and dilute up to the…

All standard purified materials were used for this study. The solvents which are used in the preparation of solutions should be HPLC grade and obtained from Merck Specialties Private Limited,Mumbai.Active pharmaceutical ingredients Decitabine were supplied by Spectrum Pharma Research Solutions, Hyderabad. [3]The formulation was purchased in a local market. Instrumentation The High performance liquid chromatography system consists of A suitable HPLC having a isocretic system equipped with auto…

Experimental Work ACETATE BY HPLC Method of Analysis Mobile phase: 0.025 mol/L (0.05N) sulfuric Acid. Using a volumetric pipette, add 3 ml of concentrated sulfuric acid to approx. 1500 ml water in 2 liter volumetric flask. Dilute volume with water. Standard Preparations: Accurately weigh 0.240g each std1 and std2 of sodium acetate tri-hydrate W.S. into 100 ml volumetric flask. Then dilute 25 ml to 50 ml with water. Sample Preparation: Dilute with water such that the concentrated of the…

cork the HCl filled conical flask. 10) Once the 0.04g magnesium strip was dropped into the conical flask and the reaction had begun, the stopwatch was started synonymously. 11) Once the reaction had ended, the stopwatch was stopped. 12) Steps 10 and 11 were repeated with 0.5M of HCl and then 1M of HCl. 13) The results were then recorded. Procedure B (Surface Area): 1) 10 ml of HCl was put into a 100 ml volumetric flask with a small amount of water. 2) The volumetric flask was inverted several…

the flask, and shaken well with the stopper. The name of the members and the date was written on the flask, and was left for a week for the iron sulphate tablets to fully dissolve in the acid. After the tablets have fully dissolved, the whole solution was filtered using a filter paper and a funnel into a 100 [cm2] volumetric flask. The remaining residue in the filter paper was rinsed with a small amount of distilled water. Then, sulphuric acid was added to the 100 [cm2] mark on the volumetric…

Sanzhar Kerimbek 20140930 General Chemistry Laboratory 1 Fall Semester 2014 Co-worker: Byungsoo Kim 20140831 Date: 27.09.2014 Title:Volumetric analysis Introduction The concept of volumetric analysis is a part of chemical analysis and is performed foremost with the volumetric chemical glassware (i.e. Erlenmeyer flasks, burets, pipets, test tubes etc.). The aim is to find out the concentration of one substance by reacting it in aqueous solution with the substance with known-concentration…

With a 1 mL volumetric pipette, 1 mL of molybdate solution was added to the water sample. The mixture was then swirled to mix it together then 2 drops of the Tin(II) Chloride solution was added. The mixture was then mixed again and the time that it took to change color…