Potassium hydroxide

The purposes of this experiment were to model a bimolecular nucleophilic substitution reaction between potassium hydroxide (KOH) with 1-bromopropane and determine whether it follows a second-order rate law mechanism. A rate constant of 0.0684 M-1 min-1 was obtained for this reaction at 45.1°C, which was determined through equilibrating the reaction and performing titrations of 0.390 M KOH with 0.1000 M hydrochloric acid (HCl). The activation energy calculated from class data was 50.188 kJ/mol, which

water purification, etc. The negative ionic charge of alum of potassium and its molecular structure makes this compound unable to be absorbed by the skin, therefore, it is sometimes used as antiperspirants by deodorant industries. The energy needed to produce new aluminum from the secondary aluminum product through recycling s is less energy than creating brand new products of aluminum. The main purpose is to synthesize alum, potassium aluminum

Why Alkaline? Ian Goodman General Purpose: To persuade Specific Purpose: To persuade my audience to add Alkaline foods to their diet. Central Idea: Many people can receive health benefits from adding alkaline foods to their diet daily. Introduction I. Attention Material A. Have you ever suffered from: kidney stones, UTI’s or general fatigue? If the answer is yes, or you fear you may be in the future, eating more alkaline foods may be able to help. (Healthline) II. Orienting

huge increase in energy savings and costs, and that is aluminum. Using aluminum can pieces with KOH (potassium hydroxide) and other reactants will eventually lead to the production of alum. Materials and Methods Starting the experiment, 1.0184 g of aluminum pieces were weighed out on an analytical balance. The aluminum was then placed in a 250 mL beaker containing 50.1 mL of 1.4M potassium hydroxide. The solution was then heated on a hot plate set at 80ºC for approximately 35 minutes with a spin of

volts of electricity, meaning the compound contained both positively and negatively charged ions that move around to conduct the electricity. Potassium Sulfate has a solubility of 1 g in 8.3 mL of water, which matches with the results of the unknown being soluble in water (The Merck Index). Ionic compounds, a form of polar compounds, are soluble in

acid to form benzil. The percent yield of benzil was 59.26% and the melting point range was 94.1-95.5°C. The literature melting point of pure benzil is 95°C, which indicates the correct product was obtained. Benzil was then rearranged using potassium hydroxide to form benzilic acid. The percent yield of benzilic acid was 57.94% and the melting point range was 147.9-149.8°C. The literature melting point of pure benzilic acid is 150°C; this also indicates that the correct product was isolated. Crude

The purpose of the experiment was to synthesize alum from aluminum foil, using a series of chemical reactions. The synthesis was achieved using sulfuric acid, potassium hydroxide, water, and aluminum. The synthesized alum was then used in a number of tests to test for the presence of ions in the compound (potassium, aluminum, sulfate, and water). The left over alum was then used to employ various techniques for crystal growth. In part one of the experiment, 0.251 grams of aluminum foil were obtained

Synthesis of benzilic acid from benzoin utilizing a multi-step reaction. Names: Arian Karim TA Name: Sayantan Das Lab Day & Time: Thursday 7:30-11:40 Lab Section #: Abstract The main purpose of this experiment was to synthesize benzilic acid from benzoin. This requires a multistep synthesis with benzyl as an intermediate product. The first step required HNO3 as an oxidizing agent and the second step required KOH and HCl. The percentage yields of benzil and benzilic acid were 59.5%

skin scraping and potassium hydroxide preparation test. The test is to assess if fungal or dermatophytic spores and hyphae are present from the skin lesion (Dains et al., 2016). Carefully scrape the skin lesion with scalpel. It is important to collect the cells from active area of the lesion like the outer are of the lesion. A drop of 20% potassium hydroxide is applied. The sample is then warmed and left for a few minutes. Add 40% of dimethyl sulfoxide to the potassium hydroxide solution for faster

triglyceride in a fat or oil with an aqueous alkali, sodium hydroxide, results in hydrolysis of the triglyceride esters forming soap. (Ausetute, 2014) A visual aid is presented in figure 1. (Chem La Tech, 2003) To create soap, two major raw materials are needed, fat and alkali. The alkali most commonly used today in soap making is sodium hydroxide. Potassium hydroxide can also be used. The alkali used in this lab was sodium hydroxide; sodium hydroxide was used as a reagent which is a substance that is used