Volumetric flask

Titrating Vinegar with Sodium Hydroxide (NaOH) Introduction Acids are anions that have at least one hydrogen cation tacked onto their molecular formulas. The Bronsted definition of an acid states that acid is a proton, H+, donor.3 Acids can fall into one of two categories: they can be strong or weak. Strong acids completely dissociate their H+ and weak acids only partially dissociate their H+.3 This means that a strong acid cannot return to its initial state once it undergoes a reaction. On the…

Mesalazine and Rifaximin use for Inflammatory Bowel Disease. Mesalazine is used as in anti-inflammatory agent, Steroidal. Rifaximin is used in Gastrointestinal Agents, Anti-infective agent. The use of Rifaximin in combination with Mesalazine has been proved to provide beneficial effect in inflammatory bowel disease. The mechanism of Mesalazine and Rifaximin is quite different. Mesalamine and Rifaximin are two different types of drugs offering some symptomatic relief to the IBD patients.…

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 until…

Hydrogen Peroxide Decomposition Lab Report Objective: By utilising the catalyst of potassium iodide to trigger a decomposition reaction in hydrogen peroxide, how will fluctuation in temperatures will affect the decomposition rate? Hypothesis: Due to the decomposition effect of potassium iodide on hydrogen peroxide, the increased temperature applied will also increase the decomposition rate, because of the more occurrences of collisions which causes the more energy to be produced. Independent…

rights, color blind mentality. Society is poured into the volumetric flask, the middle piece of glassware, and then racism is mixed with society. After these solutions are mixed, the solution turns into a deep red color. Then, the solution labeled “Laws for Equal Rights” is poured into the volumetric flask. The solution becomes lighter, but still very red. Lastly, the solution labeled “Color Blind Mentality” is added to the volumetric flask. When this is added, the solution becomes completely…

Abstract: The purpose of this experiment was to prepare and standardize a sodium hydroxide solution as well as determine the molar concentration in as strong acid and the percent by mass of acetic acid in vinegar. We used volumetric analysis, also known as titration, in both experiments. The average molar concentration for NaOH was 0.2749 mol/L while the average molar concentration of the acid solution was .2493 mol/L.The average percent by mass of acetic acid in vinegar was found to be 12.3 %…

get a 250 mL volumetric flask and fill it about halfway with distilled water. Add the NaOH to the flask and mix it until it is dissolved. When the NaOH is completely dissolved, fill the rest of the flask up with distilled water until the 250 mL line has been reached. Calculate the concentration of the NaOH, and split the solution between the two teams at the station, pouring about half into two containers. To prepare the HCl solution, measure some HCl and pour it into a Erlenmeyer flask. Make…

a 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…

Brandon Ugbesia 9/24/2015 Steps and Procedures 1. Blend a 120 g sample of each fruit separately a in a blender with about 50 mL of distilled water. Strain any extra pulp with a cheesecloth. You should have at least around 120 ml of substance. 2. Separate each of the liquids into half and put each half into its own separate individual…

Introduction The objectives in this laboratory were to explore the titrations of several known acids and bases as well as observing the mole reactions of the chemical reactions that each compound undertook. The four following acids and bases were used to predict when a set amount of reactant would reach equilibrium: Hydrochloric Acid (HCl), H2SO4 (Sulfuric Acid), NaOH (Sodium Hydroxide), and Ba(OH)2 (Barium hydroxide). An unbalanced equation of each reaction was given so the balanced equation…