Acetic anhydride

1) Primary standard: primary standard is a highly pure compound which is a reference for identifying the concentration of a known compound in titration. Titrant: in titration; titrant is a solution whose concentration is known. When there is an unknown solution (analyte), titrant is used for identifying the concentration of that unknown by adding titrant to analyte. (using burette) Acid –base indicator: acid- base indicator is an indicator that determines the pH of a solution by changing its…

Jessica Vandeventer April 13, 2016 Energy Comparison of Fuels Purpose/Question- The Purpose of the lab is to see a comparison of fuels using a home made calorimeter. Hypothesis– The burner fuel is going to be a better source of fuel than the tea candle. Data Tables/ Graphs – Data Table 1. Mass and Density of Distilled Water. Mass of 10.0 mL of distilled water (g) Density of water (g/mL) 9.2g .92g/mL Data Table 2. Calorimetric Data. Fuel Source: Initial mass of fuel (g) Final mass of fuel (g)…

It is typically assumed that all tequilas are the same 100 % agave drinks although remarkable part of them are actually mixed spirits. There have been a few attempts to study the composition of tequila samples using gas chromatography and headspace solid-phase microextration but these techniques have proved to be too costly for routine analysis. Lachenmeier and colleagues observed that the authentic tequila research required more advanced and affordable method for separating the 100 % agave…

Baking Soda and Vinegar Rockets Introduction: Baking soda and vinegar are both compounds that can go off at any moment when it is applied. We had to see what would happen is we added 10mL of vinegar in the canister and see what amount of baking soda could make the canister go the furthers. We found out that this whole turning baking soda and vinegar to a rocket was going to be a chemical change. The chemical name for baking soda is (NaHCO3) and the chemical name for vinegar is (CH3COOH) and both…

MATERIALS AND METHOD FOR BURN SCAR BIOMECHANIC BURN WOUND GENERATION All experiments and data collection were performed following approved protocols of the Ohio State University Institutional Laboratory Animal Care and Use Committee. A female red Duroc pig was maintained on standard chow ad libitum and being fasted overnight at other piggery. The animal had been anesthetized with Telazol and isoflurance. Anesthetic is a rapid and reversible drug-induced change in behavior or perception. Then…

Experiment 11: Peptides and Amino Acids The purpose of this experiment was to study the amino acid composition of artificial sweeteners and then observe simple acid and base catalyzed reactions of the amino acid and artificial sweetener aspartame. This was achieved by performing a TLC analysis using ninhydrin as an indicator to observe the composition of the amino acid as well as two of the components that make up aspartame. This is followed by the addition of an acid or base to aliquots of diet…

Vinegar Dilute and Impure Acetic Acid or better known as vinegar is a compound formed by the chemical reaction of carbon, hydrogen and oxygen. The composition of vinegar is acetic acid (C2H4O2) and water. Also, the formula for this compound is CH3COOH. These elements are nonmetals,so the type of bond that this substance made is covalent. Vinegar has many kind of properties and utilization in several ways. For example, it can be use for food preparation, cleaning and health. When added in…

The percentage of uncertainty evaluates my data by showing how accurate my results are. The Sarsons and Pickling vinegar I titrated were extremely accurate as there was 0.04% and 0.05%of uncertainty, whereas the ASDA vinegar I titrated was 0.20% uncertainty; this was the highest percentage of uncertainty which shows that this vinegar is the most unreliable in order to compare to the results of the market stall vinegar titration. Conclusion: In conclusion trading standards believe that the…

When Kevlar is spun, the resulting fiber has a tensile strength of about 3,620 MPa,[13] and a relative density of 1.44. The polymer owes its high strength to the many inter-chain bonds. These inter-molecular hydrogen bonds form between the carbonyl groups and NH centers. Additional strength is derived from aromatic stacking interactions between adjacent strands. These interactions have a greater influence on Kevlar than the van der Waals interactions and chain length that typically influence the…

• West: Assessment of CCI of various stopper, vial, and stopper blowback feature combinations. Samples with air headspace stored in nitrogen environment for four weeks: 5 of 240 samples showed evidence of a leak (drop in oxygen concentration between 1.3% and 3.4% atm). Results used by West for marketing poster. CCIT, Dry Ice • BioMarin: 130 glass vials with liquid (diluent) stored for two weeks on dry ice. Correction of total pressure measurement for carbon dioxide ingress into positive…