Hydrobromic acid

Greener Brominations Abstract In this experiment, trans-stilbene was brominated and debrominated with the use of three methods: bromination with pyridinium tribromide, bromination with hydrogen peroxide and hydrobromic acid, and debromination with zinc. The yields of parts A, B, and C are as follows: 68.6 %, 54.6 %, and 55.9 %. Introduction In the chemical process of bromination, an alkene is halogenated with bromine. Solvents that are typically used include methylene chloride and carbon

+ OH – Co(OH)2 (c) Ethene gas is burned in air. C2H4 + O2 CO2 + H2O (d) Equal volumes of equimolar solutions of phosphoric acid and potassium hydroxide are mixed. H3PO4 + OH – H2PO4 – + H2O (e) Solid calcium sulfite is heated in a vacuum. CaSO3 CaO + SO2 (f) Excess hydrochloric acid is added to a solution of diamminesilver(I) nitrate. H + + Cl – + Ag(NH3)2 + AgCl + NH4 +

10 PRE-SACE CHEMISTRY PRACTICAL DESIGN ASSESSMENT "ORGANIC vs INORGANIC ACIDS" Instructions: Students will be supplied with a range of acids including, sulphuric, ethanoic, hydrochloric, citric acids. From this list they are to choose an organic and inorganic acid to compare. Students must design and conduct a simple experiment to measure the different reaction rates of the acids. Only the following materials will be made available to students; Ph Paper Ph sensor and data logger Litmus solution

starts with H, it is an acid. Use the naming acids rules. * If the compound starts with C and contains quite a few H’s and perhaps some O’s, it is organic. Use the naming organic compounds rules. * If the compound starts with a metal, it is most likely ionic. Use the naming binary ionic compounds rules. * If the compound starts with a nonmetal other than H or C, use the naming binary molecular compounds rules. It is also essential that

Module 01 Homework Assignment Use the information presented in this module along with additional outside research to answer the questions: 1. Describe how applied microbiology is used to improve aspects of life and the environment. Microbiology is the study of microorganisms (VanMeter, VanMeter, & Hubert, n.d., p.3). These are all of the things not visible to the human eye. With the study of microbiology, it enables us to find things such as viruses and bacteria. This is helpful because

1. Soccer is one of the most demanding of all sports. The game is played on one of the largest fields of any sport, for the longest sustained time and with the least amount of breaks. Players in a soccer team are in continuous activity as they compete for loose balls, move to encourage teammates, rotate positions and run to make a space or test opponents. Running, jumping, sprinting movements in relation with sudden changes of acceleration and route outweigh the play. The power of the game ranges

group of protein and protein can break easily by acid, base, and hot temperature. To experiment our question, we used catalase solution, 3% H2O2 solution, 0.1 M HCl solution, 0.1 M NaOH solution, a beaker, an O2 gas sensor, sensor interface on a Chromebook, pH paper, and safety gloves. Therefore, we conducted experiments to test how enzyme activity in different conditions. Plus, we predicted that if temperature increases or enzyme have contacts with acid or base, enzyme activity will decrease. We

Meat Tenderness, and Consumer Perceptions Introduction The current climate of the relationship between the food-producing industry and consumers is volatile. Current self-appointed consumer leaders such as Vani Hari, known as the “Food Babe” (foodbabe.com) pressure food industry sectors for changes in products. Reasoning for these changes largely reside in the practices of fear-mongering, using terminology outside the knowledge of the readers these leaders attract, exacerbating worst-case scenarios

Determining the pH of Household Items March 22, 2016: Sara, Sam Introduction: Everyday household items can be seen as just “household items”. However, it is often not realized that we could actually determine the pH very easily. It could also be important to know the pH in everyday life. For example, it is important to keep track of human pH levels. Some people are curious to see the pH of their own body, which is a great use to keep acidic levels leveled. Another use in real life is determining

Question: Does the depth of the river affect its overall pH from mid december 2015- to early january 2016? Knowledge Probe: According to.epa.gov/acidrain/measure/pH.html, pH is a measure of the hydrogen ion concentration of a solution. Solutions with a high concentration of hydrogen ions have a low pH and solutions with a low concentrations of H+ ions have a high pH. A pH of 7 is the most neutral you can get and 0 being the most acidic and 14 being the most basic. each level is 10 times more basic/