Chris Holet 7 – 20-12 Steriochemistry of Bromine Addition to trans-Cinnamic Acid Purpose: To carry out the addition of bromine to trans-cinnamic acid and to identify the product from its melting point. Molecular Structures and Chemical Reaction(s): Results and Calculations: Table of reagents Name Density (g/ml) Amount used Amount # moles Bromine (excess) Trans-cinnamic Acid 1.246 g/cm3 0.148g – do conversion Dichloromethane 1‚3266 g/cm3 -
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Bromination of Trans-Cinnamic Acid Christopher B. Martin CHEM 3411 1 Mechanism of Bromine Addition to Alkenes Understanding the chemical mechanism (order of bonds broken and made as well as intermediates formed) has a great value in chemical synthesis. The chemical mechanism of a reaction will influence the rate of the reaction‚ the stereochemistry of the product(s)‚ and the extent of possible undesired side reactions. Organic reaction mechanisms investigate the path towards a desired product
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STEREOCHEMISTRY: ADDITION OF BROMINE TO trans-CINNAMIC ACID Required Prelab Readings: McMurry Chapter 5‚ Sections 8.2 & 21.2 Morhig‚ Sections 7.1 and 7.3. Previous techniques that you must know and be able to perform: Suction Filtration and Melting Point This experiment is designed to demonstrate two concepts. First‚ it will provide a demonstration of how chemists can use chemical reactions to understand reaction mechanisms. Second‚ is the concept of multi-step synthesis. You will
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Stereochemistry of the Addition of Bromine to trans-Cinnamic Acid Introduction/Abstract: The purpose of this experiment was to carry out the bromination of trans-cinnamic acid‚ to determine the stereochemistry of the dibromide product of 2‚3-dibromo-3-phenylpropanoic acid‚ and find out whether the reaction proceeds by the usual bromonium ion mechanism or some other mechanism. In this experiment trans-cinnamic acid was mixed with glacial acetic acid and stirred in which then bromine/acetic acid solution
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that Awful Smell”? - Bromine There are 118 known elements to man‚ and each of them differ in its own way. They vary from weight‚ structure‚ color‚ and much more‚ but many of them are similar to others and can be grouped accordingly. One element that varies drastically from others is one whose stench is so horrible‚ that the original name of the element was changed from muride to bromos‚ which means “stench” in Greek. Thus‚ bromine was named. Like many other known elements‚ bromine was discovered by
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Bromine’s physical state is a liquid‚ and it’s density is 3.122 g/cm^3. Bromine has a boiling point of 137.8ºF‚ which is also 58.8ºC. isotopes (Br-80)- 69-97 It’s melting point is 19ºF‚ also is -7.2ºC. Bromine is not very reactive as fluorine or chlorine but it’s way more reactive than iodine. Bromine is a nonmetal‚ and it’s a natural element. Bromine is known to be a very dense reddish brown toned liquid when formed compounds with elements such as chlorine‚ it works as a bleaching agent. It evaporates
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Air Pollution -occurs when gases‚ dust particles‚ fumes (or smoke) are introduced into the atmosphere in a way that makes it harmful to humans‚ animals and plant. This is because the air becomes dirty or contaminated. -the introduction into the atmosphere of chemicals‚ particulates‚ biological materials that cause discomfort‚ disease‚ or death to humans‚ damage other living organisms Air Pollutants -Things that pollute the air -A substance in the air that can be adverse to humans and the environment
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Sexual Addition may be a common problem but it still remains a relatively understood condition characterized by strong sexual urges. In recent weeks‚ the issue has resurfaced. Last week‚ a Journalist Brian Alexander(2007)‚ this psychological condition was once again questioned and the condition was described as such: "Sexual addiction is defined as any sexually-related‚ compulsive behavior which interferes with normal living and causes severe stress on family‚ friends‚ loved ones and one’s work
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Name _____________________ Class ______________ Date _________ Addition and Resolution of Vectors Equilibrium of a Particle Overview When a set of forces act on an object in such a way that the lines of action of the forces pass through a common point‚ the forces are described as concurrent forces. When these forces lie in the same geometric plane‚ the forces are also described as coplanar forces. A single G G equivalent force known as the resultant force FR may replace a set of concurrent forces
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Addiction as Choice? Andria Burgess Introduction to Psychology Addiction as Choice? Substance abuse is a pervasive problem throughout the United States. It affects all populations‚ socioeconomic groups‚ ages‚ and races. Within the community of substance abuse treatment providers‚ there is an ongoing debate on whether addiction is a disease‚ or whether individuals who abuse substances choose to engage in the behavior. There is evidence to support both positions. This paper will examine
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