Polimeri - Polymer Technology Group
... made from crude oil, a nonrenewable raw material. For example, nylon 6,6 is prepared industrially from adipic acid and 1,6-diaminohexane, both of which originate from benzene, a product of petroleum refining. Figure 30.8 Synthesis of adipic acid and ...
... made from crude oil, a nonrenewable raw material. For example, nylon 6,6 is prepared industrially from adipic acid and 1,6-diaminohexane, both of which originate from benzene, a product of petroleum refining. Figure 30.8 Synthesis of adipic acid and ...
Catalytic oxidation of ammonia to nitrogen
... acidification of the environment. NOx and SOx are converted in the atmosphere to give nitric and sulphuric acid. However emission of ammonia causes acidification of the environment in an indirect way. Reaction of ammonia with acidic aerosols in the atmosphere, such as aerosols of sulphuric acid or n ...
... acidification of the environment. NOx and SOx are converted in the atmosphere to give nitric and sulphuric acid. However emission of ammonia causes acidification of the environment in an indirect way. Reaction of ammonia with acidic aerosols in the atmosphere, such as aerosols of sulphuric acid or n ...
© www.CHEMSHEETS.co.uk 17-Jul
... e.g. the enthalpy change to go from A → B direct is the same as going from A → C → B ...
... e.g. the enthalpy change to go from A → B direct is the same as going from A → C → B ...
Carboxylic Acids Esters, Amines and Amides
... That are tertiary (no H on N) do not form hydrogen bonds and have lower melting points. All form hydrogen bonds with water. With 1-5 carbon atoms are soluble in water. ...
... That are tertiary (no H on N) do not form hydrogen bonds and have lower melting points. All form hydrogen bonds with water. With 1-5 carbon atoms are soluble in water. ...
Question Bank (Class XI - Chemistry)
... Q3- What is a chemical equation? What are its essential features? (L-2) Ans. the qualitative and quantitative representation of a chemical reaction in short form in terms of symbols and formulae is called chemical equation. For example, on heating calcium carbonate, it gives Caco3 →Ca0 + CO2 Essenti ...
... Q3- What is a chemical equation? What are its essential features? (L-2) Ans. the qualitative and quantitative representation of a chemical reaction in short form in terms of symbols and formulae is called chemical equation. For example, on heating calcium carbonate, it gives Caco3 →Ca0 + CO2 Essenti ...
SCH3U0FinalExamReview - Savita Pall and Chemistry
... 3. An orbital can hold 0, 1, or 2 electrons only. 4. Each orbital of equal energy gets 1 electron first before any orbital gets a second electron provided they are available. 5. The boiling principle. Start at the lowest possible energy level and fill it, then move to the next highest energy level. ...
... 3. An orbital can hold 0, 1, or 2 electrons only. 4. Each orbital of equal energy gets 1 electron first before any orbital gets a second electron provided they are available. 5. The boiling principle. Start at the lowest possible energy level and fill it, then move to the next highest energy level. ...
doc
... Geometric (cis-trans or E/Z) Isomers The structure of 2-butene can be represented in two ways: H ...
... Geometric (cis-trans or E/Z) Isomers The structure of 2-butene can be represented in two ways: H ...
Organic handouts - Moore Chemistry
... of carbon atoms it contains with a “-yl” ending rather than “-ane”. 4. Specify the position of the branch on the parent by putting a number in front with the lowest #s possible. 5. For multiple substituents that are identical, use di-, tri-, tetra- etc, and repeat the numbers. 6. Numbers are separat ...
... of carbon atoms it contains with a “-yl” ending rather than “-ane”. 4. Specify the position of the branch on the parent by putting a number in front with the lowest #s possible. 5. For multiple substituents that are identical, use di-, tri-, tetra- etc, and repeat the numbers. 6. Numbers are separat ...
Document
... • Contains an –SH (sulfhydryl) group. • Is named by selecting the longest carbon chain that contain the -SH. We add -thiol to the name of the parent alkane. • Parent chain is numbered from the end nearest to the -SH group. CH3─S─H ...
... • Contains an –SH (sulfhydryl) group. • Is named by selecting the longest carbon chain that contain the -SH. We add -thiol to the name of the parent alkane. • Parent chain is numbered from the end nearest to the -SH group. CH3─S─H ...
Brief Contents - Educhimica.it
... b. Because of the food, chemical changes are occurring in the digestive system. This is a chemical change. c. Because alcohol is going from a liquid phase to a solid phase, the change is a physical change. ...
... b. Because of the food, chemical changes are occurring in the digestive system. This is a chemical change. c. Because alcohol is going from a liquid phase to a solid phase, the change is a physical change. ...
Co-production of furfural and easily hydrolysable residue from
... hemicellulose) as byproducts simultaneously. In this study, sugar cane bagasse, one of the commonly used biomasses in the furfural industry,7 was chosen as raw material for one-pot production of furfural and cellulose-enriched residue using AlCl3, FeCl3, and HCl as catalysts. The influences of AlCl3, ...
... hemicellulose) as byproducts simultaneously. In this study, sugar cane bagasse, one of the commonly used biomasses in the furfural industry,7 was chosen as raw material for one-pot production of furfural and cellulose-enriched residue using AlCl3, FeCl3, and HCl as catalysts. The influences of AlCl3, ...
chapter2
... pent-an-oic acid = pentanoic acid CH3 CH2 NH 2 cyclohex-an-ol = cyclohexanol O eth-yn-e = ethyne CH3 CH2 CH2 CH eth-an-amine = ethanamine O O CH3 CCH2 CH 3 ...
... pent-an-oic acid = pentanoic acid CH3 CH2 NH 2 cyclohex-an-ol = cyclohexanol O eth-yn-e = ethyne CH3 CH2 CH2 CH eth-an-amine = ethanamine O O CH3 CCH2 CH 3 ...
SUPPORTED LIGANDS FOR METAL CATALYZED REACTIONS Rocío Marcos Escartín ISBN:
... alkyl aryl ketones under essentially solvent-free conditions. The best results for ATH have been obtained using immobilized version of TsDPEN and this resin could be recycled with virtually no limits. ...
... alkyl aryl ketones under essentially solvent-free conditions. The best results for ATH have been obtained using immobilized version of TsDPEN and this resin could be recycled with virtually no limits. ...
A Review of Surface Analysis Techniques for the
... also serves as a regular reviewer for more than 50 scientific journals and research funding agencies. (http://www.tuc.gr/konsolakis.html) ...
... also serves as a regular reviewer for more than 50 scientific journals and research funding agencies. (http://www.tuc.gr/konsolakis.html) ...
Modern Organic Chemistry
... IUPAC Names for Alkanes-2a Number the carbon atoms correctly. Left: first branch is on carbon 3. Right: first branch is on carbon 3 (From top) not carbon 4 (If from right). ...
... IUPAC Names for Alkanes-2a Number the carbon atoms correctly. Left: first branch is on carbon 3. Right: first branch is on carbon 3 (From top) not carbon 4 (If from right). ...
LINALOOL BIOTRANSFORMATION WITH FUNGI
... (v/v)), cis- and trans-furanoid linalool oxide (> 97 % (v/v), mixture of isomers) and tert-butyl methyl ether (MTBE) (> 99.8 % (v/v)) were purchased from Fluka, Germany. Lilac alcohol and lilac aldehyde stereoisomers, 8-hydroxylinalool and standards of cis- and trans-furanoid and pyranoid linalool o ...
... (v/v)), cis- and trans-furanoid linalool oxide (> 97 % (v/v), mixture of isomers) and tert-butyl methyl ether (MTBE) (> 99.8 % (v/v)) were purchased from Fluka, Germany. Lilac alcohol and lilac aldehyde stereoisomers, 8-hydroxylinalool and standards of cis- and trans-furanoid and pyranoid linalool o ...
Chemistry MCQS 12 class
... (Heavy metals, Rare elements, Transition elements) 3. The correct formula of pyrosulphuric acid is __________. (H2SO4, H2S2O7, H3S2O5) 4. Aqua regia is mixture of one part of __________ by volume and three parts of __________. (H2SO4, H3PO4, HNO3, HCl) 5. Heavy hydrogen is also called __________. Ch ...
... (Heavy metals, Rare elements, Transition elements) 3. The correct formula of pyrosulphuric acid is __________. (H2SO4, H2S2O7, H3S2O5) 4. Aqua regia is mixture of one part of __________ by volume and three parts of __________. (H2SO4, H3PO4, HNO3, HCl) 5. Heavy hydrogen is also called __________. Ch ...
Metallocene Organoactinide Complexes
... of atomic number (especially U to Am) [3, 5] and might be responsible for a broad spectrum of oxidation states. Uranium has further demonstrated the ability to access a wide range of oxidation states (III to VI) in organic solvents, providing for greater flexibility in affecting chemical transformati ...
... of atomic number (especially U to Am) [3, 5] and might be responsible for a broad spectrum of oxidation states. Uranium has further demonstrated the ability to access a wide range of oxidation states (III to VI) in organic solvents, providing for greater flexibility in affecting chemical transformati ...
The Results from a Canadian National Field Trial Comparing 1,8-
... In a separate study it was shown that 1,2-indanedione reacts with methyl alcohol to form 100% hemiketal [24]. This hemiketal is presumed to be more stable than the DFO version since its formation prevents reaction with amino acids completely. Therefore it was recommended that alcohols not be used t ...
... In a separate study it was shown that 1,2-indanedione reacts with methyl alcohol to form 100% hemiketal [24]. This hemiketal is presumed to be more stable than the DFO version since its formation prevents reaction with amino acids completely. Therefore it was recommended that alcohols not be used t ...
Lecture 7_Amines and Amides
... Consider the following compounds: 1. CH3—CH2—CH2—NH2 2. CH3—CH2—NH—CH3 3. CH3—CH2—CH2—CH3 ...
... Consider the following compounds: 1. CH3—CH2—CH2—NH2 2. CH3—CH2—NH—CH3 3. CH3—CH2—CH2—CH3 ...
edexcel_u4_2010_2013..
... (Total for Question 19 = 1 mark) 20 At 100 °C, pure water has a pH of 6, whereas at 25 °C it has a pH of 7. This is because A ...
... (Total for Question 19 = 1 mark) 20 At 100 °C, pure water has a pH of 6, whereas at 25 °C it has a pH of 7. This is because A ...
Process for the preparation of ethene and/or propene
... cyclohexene, heptenes, octenes, nonenes and decenes. The preference for specific olefins in the olefinic co-feed may depend on the purpose of the process. Also light olefins propylene and even ethylene can be recycled. Recycling propylene may be an interesting option for ...
... cyclohexene, heptenes, octenes, nonenes and decenes. The preference for specific olefins in the olefinic co-feed may depend on the purpose of the process. Also light olefins propylene and even ethylene can be recycled. Recycling propylene may be an interesting option for ...
1999 U. S. NATIONAL CHEMISTRY OLYMPIAD
... Part I of this test is designed to be taken with a Scantron® answer sheet on which the student records his or her responses. Only this Scantron® sheet is graded for a score on Part I. Testing materials, scratch paper, and the Scantron sheet should be made available to the student only during the exa ...
... Part I of this test is designed to be taken with a Scantron® answer sheet on which the student records his or her responses. Only this Scantron® sheet is graded for a score on Part I. Testing materials, scratch paper, and the Scantron sheet should be made available to the student only during the exa ...
Strychnine total synthesis
Strychnine total synthesis in chemistry describes the total synthesis of the complex biomolecule strychnine. The first reported method by the group of Robert Burns Woodward in 1954 is considered a classic in this research field. At the time it formed the natural conclusion to an elaborate process of molecular structure elucidation that started with the isolation of strychnine from the beans of Strychnos ignatii by Pierre Joseph Pelletier and Joseph Bienaimé Caventou in 1818. Major contributors to the entire effort were Sir Robert Robinson with over 250 publications and Hermann Leuchs with another 125 papers in a time span of 40 years. Robinson was awarded the Nobel Prize in Chemistry in 1947 for his work on alkaloids, strychnine included. The process of chemical identification was completed with publications in 1946 by Robinson and later confirmed by Woodward in 1947. X-ray structures establishing the absolute configuration became available between 1947 and 1951 with publications from J. M. Bijvoet and J.H. Robertson .Woodward published a very brief account on the strychnine synthesis in 1954 (just 3 pages) and a lengthy one (42 pages) in 1963.Many more methods exist and reported by the research groups of Magnus, Overman, Kuehne, Rawal, Bosch, Vollhardt, Mori, Shibasaki, Li, Fukuyama Vanderwal and MacMillan. Synthetic (+)-strychnine is also known. Racemic synthesises were published by Padwa in 2007 and in 2010 by Andrade and by Reissig.In his 1963 publication Woodward quoted Sir Robert Robinson who said for its molecular size it is the most complex substance known.