111 Exam I F 04 use
... Tear off this top page (pg. 1)-It is your scratch paper The following are molar masses you may or may not need: H2O = 18.02 ...
... Tear off this top page (pg. 1)-It is your scratch paper The following are molar masses you may or may not need: H2O = 18.02 ...
Microsoft Word - Open Access Repository of Indian Theses
... compound 20, which was prepared from D-glucose following the reported procedure. Hydrogenation of 20 using Pd(OH)2/C as a catalyst in MeOH gave benzyl deprotected compound 21 in 95% yield. Selective silylation of the primary hydroxyl group of 21 using TBDPSCl, Et3N, and catalytic amount of DMAP gave ...
... compound 20, which was prepared from D-glucose following the reported procedure. Hydrogenation of 20 using Pd(OH)2/C as a catalyst in MeOH gave benzyl deprotected compound 21 in 95% yield. Selective silylation of the primary hydroxyl group of 21 using TBDPSCl, Et3N, and catalytic amount of DMAP gave ...
Chapter 20: Electrochemistry
... (State). If any element changes it’s oxidation state during a reaction, it is a redox reaction Zero Oxidation States indicate element is neutral [+] Oxidation States indicate element is “electron poor” [-] Oxidation States indicate element is “electron rich” ...
... (State). If any element changes it’s oxidation state during a reaction, it is a redox reaction Zero Oxidation States indicate element is neutral [+] Oxidation States indicate element is “electron poor” [-] Oxidation States indicate element is “electron rich” ...
Worked out problems
... is formed. We can identify the alcohol by adding an OH to the alkyl group attached to the O atom of the carboxyl (COO) group. We can identify the acid by adding an H group to the O atom of the carboxyl group. We have learned that the first part of an ester name indicates the alcohol portion and the ...
... is formed. We can identify the alcohol by adding an OH to the alkyl group attached to the O atom of the carboxyl (COO) group. We can identify the acid by adding an H group to the O atom of the carboxyl group. We have learned that the first part of an ester name indicates the alcohol portion and the ...
cis-trans
... is formed. We can identify the alcohol by adding an OH to the alkyl group attached to the O atom of the carboxyl (COO) group. We can identify the acid by adding an H group to the O atom of the carboxyl group. We have learned that the first part of an ester name indicates the alcohol portion and the ...
... is formed. We can identify the alcohol by adding an OH to the alkyl group attached to the O atom of the carboxyl (COO) group. We can identify the acid by adding an H group to the O atom of the carboxyl group. We have learned that the first part of an ester name indicates the alcohol portion and the ...
Kinetics of Oxidation of Aliphatic Alcohols by Potassium Dichromate
... mechanism for the reaction is depicted in Scheme 1, where the protonated alcohol approaches the chromate anion resulting in formation of an intermediate complex that is called chromate ester. This complex dissociates in the rate-determining step to give the aldehyde and CrIV. CrIV is involved in fur ...
... mechanism for the reaction is depicted in Scheme 1, where the protonated alcohol approaches the chromate anion resulting in formation of an intermediate complex that is called chromate ester. This complex dissociates in the rate-determining step to give the aldehyde and CrIV. CrIV is involved in fur ...
CBSE-12th/2011/CHEMISTRY
... (ii)O=O is a much stronger bond than O-O (about 3 times). Also, O has a small size. S is larger in size. so lp repulsion is less significant. Also, S-S bond is stronger than O-O bond & S=S is less strong(less than 2 S-S bonds). This is also affected by the fact that O forms strong bonds with mostly ...
... (ii)O=O is a much stronger bond than O-O (about 3 times). Also, O has a small size. S is larger in size. so lp repulsion is less significant. Also, S-S bond is stronger than O-O bond & S=S is less strong(less than 2 S-S bonds). This is also affected by the fact that O forms strong bonds with mostly ...
Worked Example 19.1
... the second diagram, note that serine has donated a hydrogen ion to histidine. Remember that acids are proton donors. (c) Also in the second diagram, note that histidine has accepted a proton from serine. Remember that bases are proton acceptors. ...
... the second diagram, note that serine has donated a hydrogen ion to histidine. Remember that acids are proton donors. (c) Also in the second diagram, note that histidine has accepted a proton from serine. Remember that bases are proton acceptors. ...
chem 111 practice exam
... (18 points) 5. Lysine, an essential amino acid in the human body, contains C, H, O, and N. In one experiment, the complete combustion of 2.175 g of lysine gave 3.94 g CO2 and 1.89 g of H2O. In a separate experiment, 1.873 g of lysine gave 0.436 g NH3. Calculate the molecular formula of lysine if th ...
... (18 points) 5. Lysine, an essential amino acid in the human body, contains C, H, O, and N. In one experiment, the complete combustion of 2.175 g of lysine gave 3.94 g CO2 and 1.89 g of H2O. In a separate experiment, 1.873 g of lysine gave 0.436 g NH3. Calculate the molecular formula of lysine if th ...
Organic Reactions
... Liniments used for topical relief of sore muscles contain the ester methyl salicylate ("oil of wintergreen"), which is prepared from the reaction of methyl alcohol with the acid group of salicylic acid. Methyl salicylate acts as an analgesic and is absorbed through the skin; however, methyl salicyla ...
... Liniments used for topical relief of sore muscles contain the ester methyl salicylate ("oil of wintergreen"), which is prepared from the reaction of methyl alcohol with the acid group of salicylic acid. Methyl salicylate acts as an analgesic and is absorbed through the skin; however, methyl salicyla ...
Chapter 6
... which an insoluble solid (precipitate) drops out of the solution. – Clear solutions of two ionic compounds when mixed form a cloudy solution (cloudiness indicates solid) ...
... which an insoluble solid (precipitate) drops out of the solution. – Clear solutions of two ionic compounds when mixed form a cloudy solution (cloudiness indicates solid) ...
Answers - Benjamin
... d The key feature of the i.r. spectrum is the change at ca 3000 cm–1 indicating the loss of a phenolic hydroxyl and/or carboxylic acid group. The n.m.r. spectra show the loss of a carboxylic acid –OH group, and the gain of a methyl group. The CH3 group is in an environment different to that in aspir ...
... d The key feature of the i.r. spectrum is the change at ca 3000 cm–1 indicating the loss of a phenolic hydroxyl and/or carboxylic acid group. The n.m.r. spectra show the loss of a carboxylic acid –OH group, and the gain of a methyl group. The CH3 group is in an environment different to that in aspir ...
Unit F335/01
... In an equilibrium mixture at 500 K, the concentrations of hydrogen and carbon dioxide are: [H2] = 1.00 × 10–5 mol dm–3 [CO2] = 3.46 × 10–5 mol dm–3 Calculate the equilibrium concentrations of H2O and CO at 500 K. Assume the H2O and CO come solely from this reaction. Give your answers to an appropria ...
... In an equilibrium mixture at 500 K, the concentrations of hydrogen and carbon dioxide are: [H2] = 1.00 × 10–5 mol dm–3 [CO2] = 3.46 × 10–5 mol dm–3 Calculate the equilibrium concentrations of H2O and CO at 500 K. Assume the H2O and CO come solely from this reaction. Give your answers to an appropria ...
Packet 14: Organic Chemistry
... group (hydroxyl group- NOT hydroxide ion!) the functional group is –OH Classified according to the number of carbons bonded to the carbon where the –OH is Primary, secondary, tertiary Naming: Drop the “e” and add “ol”; specify the location of the –OH Uses: fuel, solvents, industrial feedst ...
... group (hydroxyl group- NOT hydroxide ion!) the functional group is –OH Classified according to the number of carbons bonded to the carbon where the –OH is Primary, secondary, tertiary Naming: Drop the “e” and add “ol”; specify the location of the –OH Uses: fuel, solvents, industrial feedst ...
Chem12 SM Unit 1 Review final new ok revised
... 101. The first naming convention for aromatic compounds is used when there are noncarbon substituents or small alkyl groups on the benzene ring. In this case, the benzene ring is considered to be the parent molecule, and the attached functional groups are named as substituents to benzene, such as i ...
... 101. The first naming convention for aromatic compounds is used when there are noncarbon substituents or small alkyl groups on the benzene ring. In this case, the benzene ring is considered to be the parent molecule, and the attached functional groups are named as substituents to benzene, such as i ...
Working with Hazardous Chemicals
... aqueous layer is separated, saturated with sodium chloride, and extracted with three 50-ml. portions of ether. The combined ethereal extracts are dried over potassium carbonate and filtered. The ether is removed at 35–40° at atmospheric pressure, and 4,4-dimethyl-2-oxazoline is collected as the temp ...
... aqueous layer is separated, saturated with sodium chloride, and extracted with three 50-ml. portions of ether. The combined ethereal extracts are dried over potassium carbonate and filtered. The ether is removed at 35–40° at atmospheric pressure, and 4,4-dimethyl-2-oxazoline is collected as the temp ...
Bk3BP08EE
... The reaction of HBr with both trans- and cis-hex-3-ene results in the formation of the same product, 3-bromohexane, CH3CH2C*HBrCH2CH2CH3. Since carbon-3 is chiral, the product exhibits optical isomerism. In the reaction, H+ is first added to the carbon-4 to form a carbocation. The “+” charge is on c ...
... The reaction of HBr with both trans- and cis-hex-3-ene results in the formation of the same product, 3-bromohexane, CH3CH2C*HBrCH2CH2CH3. Since carbon-3 is chiral, the product exhibits optical isomerism. In the reaction, H+ is first added to the carbon-4 to form a carbocation. The “+” charge is on c ...
Lecture 11 - AP Chem Solutions
... compounds containing group 1A ions, nitrate, and ammonium are always soluble. 2) A potassium hydroxide solution is mixed with a solution of zinc nitrate. The potassium ion is always soluble as it is a Group 1A element. Nitrate is also soluble with everything. Thus, K+ and NO3- must be spectator ions ...
... compounds containing group 1A ions, nitrate, and ammonium are always soluble. 2) A potassium hydroxide solution is mixed with a solution of zinc nitrate. The potassium ion is always soluble as it is a Group 1A element. Nitrate is also soluble with everything. Thus, K+ and NO3- must be spectator ions ...
1 - College of Arts and Sciences
... A mass of 4.0 g indicates that the uncertainty is in the first decimal place of the measurement. Thus, the mass might be anything between 3.9 and 4.1 ...
... A mass of 4.0 g indicates that the uncertainty is in the first decimal place of the measurement. Thus, the mass might be anything between 3.9 and 4.1 ...
1 - College of Arts and Sciences
... A mass of 4.0 g indicates that the uncertainty is in the first decimal place of the measurement. Thus, the mass might be anything between 3.9 and 4.1 ...
... A mass of 4.0 g indicates that the uncertainty is in the first decimal place of the measurement. Thus, the mass might be anything between 3.9 and 4.1 ...
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.