Volumetric flask

99% 1.07g 100% 1.081g Hence, mass of KIO3 used= 1.081g Apart from KIO3 and KI, sulfuric acid is also present in the conical flask, in excess, to provide H+ ions to increase the rate of reaction. 2.3 Conclusion After having done both experiment in the laboratory, we can conclude that he titration method relying on visual…

For example, when transferring the unknown samples from the weigh boats to the flasks, students could only use the smallest amounts of water possible. With small amounts of water used to transfer the reagent to an equipment, came the possibility of having a less than 100% transfer. And because a 100% reaction is dependent on a 100%…

Afterwards, the flask was filled with distilled water to the mark, so that the bottom of the meniscus is aligned with the ring in the neck of the flask. The filled flask was then weighted and the measure was recorded. Then, the distilled water was poured from the flask into a 50 ml beaker and its temperature was recorded. Once that was done, the flask was cleaned with an unknown solution provided by the instructor and then the flask was filled with the same unknown solution up to the mark. The…

The scientist’s want to see if certain sugars affect the amount of fermentation caused by yeast. The problem statement is; in which of these sugars, monosaccharides, disaccharides, or polysaccharides, will fermentation by yeast occur the best? The independent variable is the variables the scientists can control, so the scientists decided to use certain sugars, such as dextrose, maltose, and lactose being the IVs (Independent variables). The scientist’s Dependent Variable (DV) is the outcome of…

• The goal of this experiment is to learn how to use and become accustomed to the different types of scientific equipment that will be used in the laboratory for future labs (i.e. pipettes, glassware, etc). This experiment will also help with practicing and learning how to calculate error in an experiment when using lab equipment that involves measurement, since measurement is not always precise. A-2. Tell the reader the subject of the experiment and what the key experimental variables are. •…

“DEVELOPMENT AND VALIDATION OF STABILITY INDICATING METHOD FOR SIMULTANEOUS ESTIMATION OF CEFTRIAXONE AND TAZOBACTAM INJECTION USING RP-UPLC METHOD” 2.1 OBJECTIVE To develop and Validate Stability Indicating Method for simultaneous estimation of Ceftriaxone and Tazobactam in their combined dosage form by RP-UPLC method in various stress condition like, alkaline, acidic, oxidative, thermal and photo degradation. 2.4 METHODOLOGY 2.4.1 Chromatographic Condition Column Separation was achieved by…

was to standardise a solution of hydrochloric acid with an approximate concentration of 2.5 M against sodium carbonate solution. The main steps of this experiment were preparing the sodium carbonate solution, transferring the solution into a conical flask by using a pipette, adding the bromophenol blue indicator and titrating with hydrochloric acid until the first green colour appeared. The concentration of hydrochloric acid was found to be 0.2508 mol L-1. Introduction Standardisation is a…

Discussion As a result of the calculations made above, considering the overall; CH3COCH3 (aq) + I2 (aq) + HCl (aq)  CH3COCH2I (aq) + HI (aq) the rate law for this reaction is, Rate = k[CH_3 COCH_3 ]^m [I_2 ]^n [HCl]^p. As supported in question 3 part A, the reaction orders m, n and p for acetone, iodine and HCL, respectively were 1, 0, 1. Resulting in an overall reaction order of 2. Manipulations were based on the usage of initial concentrations to calculation the rate constant for the…

A simple, economic, selective, precise, accurate and sensitive HPTLC method for analysis of Cilnidipine and Chlorthalidone, as a bulk drug and in formulation, was developed and validated according to ICH guidelines. The method employed HPTLC aluminium plates precoated with silica gel 60F-254 as the stationary phase while the solvent consisted of Toluene: Methanol: Ethyl acetate (8:2:0.1 v/v/v). The system was found to give compact spot for drug (Rf value of Cilnidipine and Chlorthalidone was…

extraction. In this experiment, 7 ml of the mixture was used instead of 10 ml. A portion of this mixture was transferred to another flask to facilitate cooling. Afterwards, 3.5 ml of 12 M hydrochloric acid was added gradually to the mixture. A sample was obtained at a melting point of 1250C, and another at 750C. A sample of this mixture was then transferred to a 50 ml volumetric flask. Finally, a crystal was formed and the melting point of the sample was obtained as 62 0C. A Flowchart…