Volumetric flask

pH sensitive organic dye that is colorless in acidic solutions like vinegar, and deep pink in basic solutions like sodium hydroxide. One drop of NaOH should be at the equivalence point of the titration, it will cause the solution in the Erlenmeyer flask from colorless to a very pale pink. While the titration is performed, collect the following…

Erlenmeyer flasks, pipettes, side-arm flask, hot plate, water bath…

Preparation of 0.1N HCL 8 ml of hydrochloric acid is taken in 1000ml volumetric flask and dissolved with distilled water and then make up to 1000ml with distilled water. Standard graph of Gemifloxacin mesylate: The λmax of Gemifloxacin mesylate in 0.1N HCL was scanned in UV-Visible Spectrophotometer and found to have maximum absorbance at 271nm.100mg of Gemifloxacin was weighed and transferred into 100ml volumetric flask. To this, small quantity of 0.1N HCL is added to dissolve the drug. Then…

Purpose In this experiment, volumetric glassware was used in order to determine the density of an unknown liquid. Additionally, the opposite process was used to determine the calibration of a piece of glassware using a known density. In the first activity, “Density of Liquids”, the identity of a liquid was determined by calculating its density (g/mL). First the mass (g) of a specific volume (mL) of water and the unknown liquid was found. Their densities (g/mL) were then calculated by dividing…

Hydrochloric acid Stock solution in 0.1N Hydrochloric acid (0.1N HCl): 10 mg of Amoxicillin was accurately weighed and transferred into 10 ml volumetric flask. It was dissolved and diluted to volume make up to mark with 0.1N HCl to give stock solution containing 1000 µg/ml, after than 1ml take to from 1000 µg/ml and dilute to volume make up to mark of 10ml volumetric flask with 0.1N HCl to give 100 µg/ml. Preparation of working standard solution in 0.1N Hydrochloric acid: Prepared 1 µg/ml,…

added into the separating funnel that has the organic extract from the earlier procedure. The separating funnel is then shook gently for 2 minutes in order to mix the contents together. Then, the aqueous extract solution was poured into a 250 ml volumetric flask. Next, make up to the volume with 0.1 M sodium hydroxide…

The purpose and objective of this experiment was to determine the percent by mass of acetic acid within a sample of vinegar using volumetric analysis with the titration technique. The theory is that if the volume and molar concentration of the standardized sodium hydroxide (NaOH) solution is known, then the percent by mass of the acetic acid (CH3COOH) in vinegar can be calculated after a titration.1 Within this experiment, a NaOH solution was standardized with a primary standard acid of…

a 100mL conical flask and 2ml of concentrated HNO3 and 2ml of concentrated HCL was added to the flask. It was left for 5minutes. 5ml of deionised water was added while swirling then it was boiled for 10-15 minutes. 3M HCL was added every once in a while, the rest was filtered using a filtering paper. It was diluted with 10ml of water and transferred into a clean and dry sample bottle. The residual was washed and it was transferred to the sample bottle. Any left overs in the flask was filtered…

100ml of mobile phase (H2O: ACN, 90:10) using a 100ml volumetric flask. This mixture was placed on a sonicate bath for 15 minutes to allow for complete dissolution of the aspirin. Using a syringe driven filter device, the solution was filtered to get rid of the insoluble excipients like talc contained in the aspirin tablet. A pipette was used to transfer 0.2ml of the stock solution into six (6) different 10ml volumetric flasks. The volumetric flasks were labelled 1 to 6 accordingly. Standard…

solvent using a volumetric flask. Method • Firstly, you would need to calculate the mass of the NaOH that you are going use. • Next you accurately weigh out the NaOH (to 2d.p) in a weighing boat using a weighing machine. You should record down the final mass. • Now you transfer the NaOH to a small beaker. To make sure all the particles are transferred to the beaker you rinse the weighing boat…