Slide 1
... reddish-brown colour of iodine solution being formed during the reaction. Note also, that sodium chlorate(I) solution is alkaline and contains a sufficietly high [OH-] to carry out the second half of the reaction. In effect you are making I2 “in situ” so the tests are essentially the same. ...
... reddish-brown colour of iodine solution being formed during the reaction. Note also, that sodium chlorate(I) solution is alkaline and contains a sufficietly high [OH-] to carry out the second half of the reaction. In effect you are making I2 “in situ” so the tests are essentially the same. ...
Arginine- or Lysine-catalyzed Michael Addition of Nitromethane to α
... easily deprotonated to be an activated form in alcohols. Although, the conversions are similar in both reactions in ethanol and 2-propanol, ethanol was chosen as a co-solvent for further investigation because it has been reported that ethanol is more polar and less toxic than 2-propanol.11 The optim ...
... easily deprotonated to be an activated form in alcohols. Although, the conversions are similar in both reactions in ethanol and 2-propanol, ethanol was chosen as a co-solvent for further investigation because it has been reported that ethanol is more polar and less toxic than 2-propanol.11 The optim ...
Complete the following equations
... product. However, reactions between phosphorus, Arsenic, and antimony with chlorine gas will produce both trichloride, MCl3, and pentachloride compounds (MCl5). Explain why nitrogen (a member of Group 5A elements) will not form pentachloride. (Nitrogen cannot form NCl5 because nitrogen atom is a sec ...
... product. However, reactions between phosphorus, Arsenic, and antimony with chlorine gas will produce both trichloride, MCl3, and pentachloride compounds (MCl5). Explain why nitrogen (a member of Group 5A elements) will not form pentachloride. (Nitrogen cannot form NCl5 because nitrogen atom is a sec ...
Organic Reactions
... Alkene + Hydrogen gas (with catalyst) alkane Hydrogenation is saturating an unsaturated hydrocarbon Also called reduction (carbon is reduced in this reaction but is also reduced in many of the reactions above) Heterogeneous Catalyst: Pd or PtO2 (rxn occurs on a metal surface) Uses: unsaturated veg ...
... Alkene + Hydrogen gas (with catalyst) alkane Hydrogenation is saturating an unsaturated hydrocarbon Also called reduction (carbon is reduced in this reaction but is also reduced in many of the reactions above) Heterogeneous Catalyst: Pd or PtO2 (rxn occurs on a metal surface) Uses: unsaturated veg ...
Carboxylic Acid Derivatives and Nucleophilic Acyl Substitution
... NH3, primary (RNH2) and secondary amines (R2NH) • The reaction with tertiary amines (R3N) gives an unstable species that cannot be isolated • HCl is neutralized by the amine or an added base ...
... NH3, primary (RNH2) and secondary amines (R2NH) • The reaction with tertiary amines (R3N) gives an unstable species that cannot be isolated • HCl is neutralized by the amine or an added base ...
AS Paper 1 Practice Paper 4 - A
... The student decided to use a measuring cylinder to obtain 25.0 cm3 of the supplier’s solution. This was poured into a 250 cm3 graduated flask and the liquid level was made up to the mark with de-ionised water. The student filled a burette with the acid solution. The following results were obtained w ...
... The student decided to use a measuring cylinder to obtain 25.0 cm3 of the supplier’s solution. This was poured into a 250 cm3 graduated flask and the liquid level was made up to the mark with de-ionised water. The student filled a burette with the acid solution. The following results were obtained w ...
LDA preparation and other lab techniques
... of the column. Sometimes it is necessary to repeat this procedure 2-3 to remove most of the phosphine oxide. ...
... of the column. Sometimes it is necessary to repeat this procedure 2-3 to remove most of the phosphine oxide. ...
Energy from Chemicals
... How many carbon and hydrogen atoms would there be in an alcohol that has a molar heat of combustion of 3900 kJ / mol? number of carbon atoms ...
... How many carbon and hydrogen atoms would there be in an alcohol that has a molar heat of combustion of 3900 kJ / mol? number of carbon atoms ...
2012 Chem 13 News Exam
... answer, but no penalty if you do not answer. 7. Take care that you make firm, black pencil marks, just filling the oval. Be careful that any erasures are complete—make the ...
... answer, but no penalty if you do not answer. 7. Take care that you make firm, black pencil marks, just filling the oval. Be careful that any erasures are complete—make the ...
... observed at 1 -1.5ppm in 3a-c attributed to the methyl groups of dimedone and that one of isopropanol. 13CNMR of 3a-c showed a characteristic peak at δc 198ppm for carbonyl group and 155-157ppm for aromatic substituent. The chemical shift of C=C in pyridyl ring was appeared clearly as two peaks at 1 ...
Learning Guide for Chapter 16
... Can ethers undergo hydrogen bonding with each other? What about with water? no H-bonding - no H on EN atom ...
... Can ethers undergo hydrogen bonding with each other? What about with water? no H-bonding - no H on EN atom ...
AS 2, Module 2
... (b) One manufacturer makes an “ice pack” containing 120 g of water. What mass of ammonium nitrate will be needed to produce a temperature fall of 25.0 °C? ...
... (b) One manufacturer makes an “ice pack” containing 120 g of water. What mass of ammonium nitrate will be needed to produce a temperature fall of 25.0 °C? ...
Macromolecules polymers carbohydrates lipids proteins nucleic
... If the carbonyl group is off the end of the carbon skeleton, it is referred to as an aldehyde. ...
... If the carbonyl group is off the end of the carbon skeleton, it is referred to as an aldehyde. ...
AP Thermo I Notes
... is the electrical charge on the two objects, and d is the distance between them. K = 8.99x109 J-m/C2 (C is in coulombs) Q will usually be about the size of electron charge (1.6x10-19 C) When both Q’s have the same sign, the charges will repel one another, etc. When Eel is positive, what is t ...
... is the electrical charge on the two objects, and d is the distance between them. K = 8.99x109 J-m/C2 (C is in coulombs) Q will usually be about the size of electron charge (1.6x10-19 C) When both Q’s have the same sign, the charges will repel one another, etc. When Eel is positive, what is t ...
The Elements of Group 15 (5A, V, VA) The Nitrogen Group
... Phosphorus is a tetrameric solid (white phosphorus) in its standard state (P4(s)), although it exists as many allotropes. White phosphorus reacts with oxygen (combusts), so must be stored under water. Formerly used in matches. ...
... Phosphorus is a tetrameric solid (white phosphorus) in its standard state (P4(s)), although it exists as many allotropes. White phosphorus reacts with oxygen (combusts), so must be stored under water. Formerly used in matches. ...
Prof_Elias_Inorg_lec_7
... Square planar 16 electron d8 complex (Ph3P)3RhCl Discovered by G Wilkinson as well as by R Coffey almost at the same ...
... Square planar 16 electron d8 complex (Ph3P)3RhCl Discovered by G Wilkinson as well as by R Coffey almost at the same ...
07. Aldehydes and ketones
... 4. Reactions of condensation 1). Aldol condensation As noted earlier, an aldehyde is partially converted to its enolate anion by bases such as hydroxide ion and alkoxide ions. This type of condensations is character for aldehydes which have hydrogen atoms at the α-carbon atom. ...
... 4. Reactions of condensation 1). Aldol condensation As noted earlier, an aldehyde is partially converted to its enolate anion by bases such as hydroxide ion and alkoxide ions. This type of condensations is character for aldehydes which have hydrogen atoms at the α-carbon atom. ...
Lecture 11 - U of L Class Index
... For example, CaO melts at 2572°C, a temperature well beyond the range of an ordinary fire. Calcium compounds such as lime (CaO) were known and used in ancient times. Calcium metal, however, was first prepared in 1808 by Sir Humphry Davy, who also prepared magnesium, strontium, and barium in the same ...
... For example, CaO melts at 2572°C, a temperature well beyond the range of an ordinary fire. Calcium compounds such as lime (CaO) were known and used in ancient times. Calcium metal, however, was first prepared in 1808 by Sir Humphry Davy, who also prepared magnesium, strontium, and barium in the same ...
3.6 Organic analysis
... 3) This molecule is cyclic and contains 6 carbon atoms. Use this information and the IR sepctra below to suggest a structure: ...
... 3) This molecule is cyclic and contains 6 carbon atoms. Use this information and the IR sepctra below to suggest a structure: ...
Notes
... Hydrocarbons: Alkynes Definition/Functional group: at least one triple bond; unsaturated; nonpolar Suffix: -yne Examples Ethyne, C2H2 Butyne, C4H6 ...
... Hydrocarbons: Alkynes Definition/Functional group: at least one triple bond; unsaturated; nonpolar Suffix: -yne Examples Ethyne, C2H2 Butyne, C4H6 ...
IOSR Journal of Applied Chemistry (IOSR-JAC) e-ISSN: 2278-5736.
... hydrogen from acetic acid forming acetate radical which may further decarboxylate to generate methyl radical. There is a possibility of hydrogen radical generation by combination of a proton with an electron in the conduction band and this hydrogen radical can combine with methyl radical to form met ...
... hydrogen from acetic acid forming acetate radical which may further decarboxylate to generate methyl radical. There is a possibility of hydrogen radical generation by combination of a proton with an electron in the conduction band and this hydrogen radical can combine with methyl radical to form met ...
GC97F Pretest A - American Chemical Society
... be turned in with the test booklet at the end of the examination. Local Sections may use an answer sheet of their own choice. The full examination consists of 60 multiple-choice questions representing a fairly wide range of difficulty. Students should be permitted to use non-programmable calculators ...
... be turned in with the test booklet at the end of the examination. Local Sections may use an answer sheet of their own choice. The full examination consists of 60 multiple-choice questions representing a fairly wide range of difficulty. Students should be permitted to use non-programmable calculators ...
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.