abundant amount of routes that can be taken and still get you the same result. For the following experiment‚ the main focus is the use of a cycloaddition reaction‚ also known as Diels-Alder. According to the lab manual‚ this reaction consists of the addition of a diene and a dienophile and that the Diels-Alder reaction builds stereospecific ring compounds with ease (Weldegirma 80). The reaction takes place between the two pi electrons from the dienophile and the 4 pi electrons from the diene; what happens
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on a piece of copper metal? What will happen if a drop of solution containing copper ions is placed on a piece of silver metal? Chlorine and bromine are both non-metals (both negative in compounds) and both are used for disinfecting and bleaching. What will happen if chlorine is added to a solution containing bromide ions? What will happen if bromine is added to a solution containing chloride ions? Permanganate ions (MnO4-) react with iron(II) ions (Fe2+) in acid solution. What about the ratio
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sample in test tube+ 1 drop dilute neutral KMnO4‚ if NO DECOLORIZATION warm mixture. Primary Alcohol( carboxylic acid Secondary Alcohol( ketones Tertiary( none Phenols Reaction with bromine/water (Confirms if phenol compound) Reagent: bromine in H2O Observation: Disappearance of orange-brown bromine color‚ then formation of white precipitate Procedure: 3 drops phenol soln on test tube+ Br in H2O drop by drop while shaking‚ observe formation of ppt Oxidation by KMnO4 (Confirms if phenol
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When 4-methylcyclohexanol was combined with the bromine solution‚ the mixture turned into a light yellow color versus 4-methylcyclohexene with the bromine solution being colorless; the initial color for 4-methylcyclohexanol was combined with the bromine solution was a light orange/brown color. The solution being colorless indicated a positive sign of a double bond being present in 4-methylcyclohexene
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Vegetative reproduction (vegetative propagation‚ vegetative multiplication‚ vegetative cloning) is a form of asexual reproduction in plants. It is a process by which new individuals arise without production of seeds or spores. It can occur naturally or be induced by horticulturists. Although most plants normally reproduce sexually‚ many have the ability for vegetative propagation‚ or can be vegetatively propagated if small pieces are subjected to chemical (hormonal) treatments. This is because meristematic
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2013 Lab-partner: Viktoria R. Beltran RELATIVE RATES OF ELECTROPHILIC AROMATIC SUBSTITUTION I. Objective(s) In this Experiment‚ the relative reactivities of different substituted benzenes towards bromination will be determined‚ where bromine is dissolved in acetic acid. Materials and apparatus Test solutions: 0.2 M solutions in ethyl acetate: Benzene‚ chlorobenzene‚ phenol‚ nitrophenol‚ aniline and acetanilide. Measuring pipettes (5 mL) micro test tubes 0.05 M Br2
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NORTHERN CARIBBEAN UNIVERSITY DEPARTMENT OF BIOLOGY‚ CHEMISTRY and ENVIRONMENTAL SCIENCE LABORATORY MANUAL Instructor: Dr. M. Wilson CHEM401: BIOCHEMISTRY for NURSES Prepared by: Oreane Collins CHEMISTRY LABORATORY REGULATIONS AND SAFETY PRECAUTIONS Reference: http://www.sciencebyjones.com/safety_rules.htm Thanks to the Flinn Scientific Safety Rules for much of the below. General Guidelines 1. Conduct yourself in a responsible manner at all times
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( polyethylene) through addition reactions * Examples: ethylene oxide (CH2)2O -> sterilizer Ethanol (C3COOH) -> solvent Polyethylene (CH2)n -> plastic 1D – identify that ethylene serves as a monomer from which polymers are made * Individual monomers of ethene join by covalent bonds to form long chain polymers 1E – identify polyethylene as an addition polymer and explain the meaning of this term * Addition polymerisation to form polyethylene
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following are examples of heteronuclear diatomic molecules with covalent bonding: Let us look at HBr‚ for example. Hydrogen is on the left side of the stairs that divide metals and nonmetals in the periodic table‚ but ‘’hydrogen is a nonmetal’’. Bromine (Br) is also a nonmetal‚ so HBr is a heteronuclear diatomic molecule with a covalent bond. !!!Lesson Summary __Diatomic molecules__ consist of two atoms that are either from the same element‚ or from different elements. If the diatomic molecule
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solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu2+ion. Explain why? = Both the compounds i.e.‚ and fall under the category of addition compounds with only one major difference i.e.‚ the former is an example of a double salt‚ while the latter is a coordination compound. A double salt is an addition compound that is stable in the solid state but that which breaks up into its constituent ions in the dissolved state. These compounds exhibit individual properties
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