Exam 3 Key - Chemistry
... 4. (4) One of the following is not true about diborane (BH3). Which one? a) it is a reducing agent b) it reacts with carboxylic acids to form alcohols c) it does not react with nitro groups d) it is essentially a source of hydride (H-) e) it is an electron deficient species 5. (4) One of the followi ...
... 4. (4) One of the following is not true about diborane (BH3). Which one? a) it is a reducing agent b) it reacts with carboxylic acids to form alcohols c) it does not react with nitro groups d) it is essentially a source of hydride (H-) e) it is an electron deficient species 5. (4) One of the followi ...
Enantioselective Synthesis of Cyclic Ethers through a Vanadium
... The enantioselective total synthesis of pantofuranoid E, isolated from pantoneura plocamioides (a red Antarctic alga),[15] highlights the application of the vanadium-catalyzed tandem sequence for the enantioselective construction of cyclic ethers (Scheme 3). The synthesis begins with 2,4-cis-THF 10, ...
... The enantioselective total synthesis of pantofuranoid E, isolated from pantoneura plocamioides (a red Antarctic alga),[15] highlights the application of the vanadium-catalyzed tandem sequence for the enantioselective construction of cyclic ethers (Scheme 3). The synthesis begins with 2,4-cis-THF 10, ...
Chapter 20 - Simpson County Schools
... a benzene ring. Naming: Carbon atoms are numbered starting at one of the substituted groups. Numbering may be either clockwise or counterclockwise but must be done in the direction that gives the lowest possible numbers to the substituent groups. When the compound is named as a derivative of one o ...
... a benzene ring. Naming: Carbon atoms are numbered starting at one of the substituted groups. Numbering may be either clockwise or counterclockwise but must be done in the direction that gives the lowest possible numbers to the substituent groups. When the compound is named as a derivative of one o ...
Biochemistry 462a - Enzymes Extra Questions
... c. The kinetics of the reaction can not be predicted d. The kinetics depend on the nature of the reactants e. The kinetics depend on the nature of the products 2. If the standard free energy for an uncatalyzed reaction is 2500 kJ/mol, then what can you say about the standard free energy for the enzy ...
... c. The kinetics of the reaction can not be predicted d. The kinetics depend on the nature of the reactants e. The kinetics depend on the nature of the products 2. If the standard free energy for an uncatalyzed reaction is 2500 kJ/mol, then what can you say about the standard free energy for the enzy ...
ENZYMES - SELF STUDY QUESTIONS 1. A chemical reaction has a
... c. The kinetics of the reaction can not be predicted d. The kinetics depend on the nature of the reactants e. The kinetics depend on the nature of the products 2. If the standard free energy for an uncatalyzed reaction is 2500 kJ/mol, then what can you say about the standard free energy for the enzy ...
... c. The kinetics of the reaction can not be predicted d. The kinetics depend on the nature of the reactants e. The kinetics depend on the nature of the products 2. If the standard free energy for an uncatalyzed reaction is 2500 kJ/mol, then what can you say about the standard free energy for the enzy ...
Chapter 17 Aldehydes and Ketones
... • Hemiacetals are generally unstable and are only minor components of an equilibrium mixture except in one very important type of molecule. • When a hydroxyl group is part of the same molecule that contains the carbonyl group and a five- or sixmembered ring can form, the compound exists almost entir ...
... • Hemiacetals are generally unstable and are only minor components of an equilibrium mixture except in one very important type of molecule. • When a hydroxyl group is part of the same molecule that contains the carbonyl group and a five- or sixmembered ring can form, the compound exists almost entir ...
Ch 16 Aldehydes and Ketones I
... The addition of Ylides: The Wittig Reaction • Although a mixture of E and Z isomers results, the Wittig Reaction is better than most other alkene synthesis reactions because there is no ambiguity as to the location of the double bond. • The phosphorus ylides are prepared from triphenylphosphine and ...
... The addition of Ylides: The Wittig Reaction • Although a mixture of E and Z isomers results, the Wittig Reaction is better than most other alkene synthesis reactions because there is no ambiguity as to the location of the double bond. • The phosphorus ylides are prepared from triphenylphosphine and ...
673 lab three
... A) DISCUSS CHEMICAL REACTIONS: start with a definition and apply the law of conservation of mass in a chemical reaction to the reaction in this lab. Discuss balanced reactions and give three example reactions and SHOW that they are balanced. Clearly indicate the role of COEFFICIENTS., B) DISCUSS CHE ...
... A) DISCUSS CHEMICAL REACTIONS: start with a definition and apply the law of conservation of mass in a chemical reaction to the reaction in this lab. Discuss balanced reactions and give three example reactions and SHOW that they are balanced. Clearly indicate the role of COEFFICIENTS., B) DISCUSS CHE ...
The first practical method for asymmetric epoxidation
... ice/CC14) and 50 mL of 10% aqueous tartaric acid solution was added while stirring; the aqueous layer solidified. After 30 min, the cooling bath was removed and stirring was continued at room temperature for 1 h or until the aqueous layer became clear. After separation of the aqueous layer, the orga ...
... ice/CC14) and 50 mL of 10% aqueous tartaric acid solution was added while stirring; the aqueous layer solidified. After 30 min, the cooling bath was removed and stirring was continued at room temperature for 1 h or until the aqueous layer became clear. After separation of the aqueous layer, the orga ...
Exam Review - hrsbstaff.ednet.ns.ca
... 111. The number of carbon monoxide molecules contained in 14.0g of carbon monoxide is a) 6.02 x1023 b) 3.01 x 1023 c) 3.01 X 1022 d) 6.02 x1022 112. The number of atoms contained in 2.80 g of carbon monoxide is a) 6.02 x1023 b) 6.02 x1022 c) 1.20 x 1023 d) 1.20 x1024 113. The number of moles of H2S ...
... 111. The number of carbon monoxide molecules contained in 14.0g of carbon monoxide is a) 6.02 x1023 b) 3.01 x 1023 c) 3.01 X 1022 d) 6.02 x1022 112. The number of atoms contained in 2.80 g of carbon monoxide is a) 6.02 x1023 b) 6.02 x1022 c) 1.20 x 1023 d) 1.20 x1024 113. The number of moles of H2S ...
Click on image to content
... reacts with ethanoic acid in presence of concentrated sulphuric acid to form ethyl ethanoate and water. The compound formed by the reaction of an alcohol with a carboxylic acid is known as ester, and the reaction as esterification. Esters are sweet smelling compounds used for making perfumes. ...
... reacts with ethanoic acid in presence of concentrated sulphuric acid to form ethyl ethanoate and water. The compound formed by the reaction of an alcohol with a carboxylic acid is known as ester, and the reaction as esterification. Esters are sweet smelling compounds used for making perfumes. ...
In-Class Exam - Fayetteville State University
... 29. The balanced reaction between aqueous nitric acid and aqueous strontium hydroxide is: A) HNO3 (aq) + Sr(OH)2 (aq) Sr(NO3)2 (aq) + H2 (g) B) HNO3 (aq) + SrOH (aq) H2O (l) + SrNO3 (aq) C) 2HNO3 (aq) + Sr(OH)2 (aq) 2H2O (l) + Sr(NO3)2 (aq) D) HNO3 (aq) + Sr(OH)2 (aq) H2O (l) + Sr(NO3)2 (aq) ...
... 29. The balanced reaction between aqueous nitric acid and aqueous strontium hydroxide is: A) HNO3 (aq) + Sr(OH)2 (aq) Sr(NO3)2 (aq) + H2 (g) B) HNO3 (aq) + SrOH (aq) H2O (l) + SrNO3 (aq) C) 2HNO3 (aq) + Sr(OH)2 (aq) 2H2O (l) + Sr(NO3)2 (aq) D) HNO3 (aq) + Sr(OH)2 (aq) H2O (l) + Sr(NO3)2 (aq) ...
Higher Tier, Unit C2: Chemistry
... Complete in blue or black ink only. Do not write with a gel pen. Answer all eight questions. INFORMATION FOR CANDIDATES The total mark for this paper is 90. Figures in brackets printed down the right-hand side of pages indicate the marks awarded to each question or part question. Quality of written ...
... Complete in blue or black ink only. Do not write with a gel pen. Answer all eight questions. INFORMATION FOR CANDIDATES The total mark for this paper is 90. Figures in brackets printed down the right-hand side of pages indicate the marks awarded to each question or part question. Quality of written ...
Amines
... 1. Identify the longest carbon chain that includes the C=O portion of the amide group. 2. Change the ending to –amide. 3. Identify and name any substituent groups. Numbering starts at the amide end. Solution: • the parent chain has five carbons • ethyl group attached to C2 ...
... 1. Identify the longest carbon chain that includes the C=O portion of the amide group. 2. Change the ending to –amide. 3. Identify and name any substituent groups. Numbering starts at the amide end. Solution: • the parent chain has five carbons • ethyl group attached to C2 ...
handout alkenes from alcohols
... This procedure has been adapted from the microscale procedure described in the third edition of Macroscale and Microscale Organic Experiments by Kenneth L. Williamson (Houghton Mifflin, Boston, 1999). ...
... This procedure has been adapted from the microscale procedure described in the third edition of Macroscale and Microscale Organic Experiments by Kenneth L. Williamson (Houghton Mifflin, Boston, 1999). ...
Please use your NUMERICAL RESPONSE SHEET to answer the
... mechanical mixture b. pure substance c. solution d. compound __________________________________________________________________________________________ Use the following information to answer the next question To help identify substance X, Mark listed four properties: I) II) III) IV) ...
... mechanical mixture b. pure substance c. solution d. compound __________________________________________________________________________________________ Use the following information to answer the next question To help identify substance X, Mark listed four properties: I) II) III) IV) ...
CHEMISTRY: Practice Spring Final
... Note: Do not JUST study this practice exam; it does not contain every topic that may appear on your final exam. Be sure to look at your review guide to see a list of topics you are responsible for. Also, this practice test is broken up by topic; your final exam will not be. CHEMICAL REACTIONS 1) Cla ...
... Note: Do not JUST study this practice exam; it does not contain every topic that may appear on your final exam. Be sure to look at your review guide to see a list of topics you are responsible for. Also, this practice test is broken up by topic; your final exam will not be. CHEMICAL REACTIONS 1) Cla ...
+ CuO Cu + O
... Write the scientific term: 1- The arrangement of the metals in a descending order according to the degree of their chemical activity is called ( ……………………………………….) 2- The substance which loses an electron or more during a chemical reaction. (…………………………………………) 3- The substance which takes oxygen away ...
... Write the scientific term: 1- The arrangement of the metals in a descending order according to the degree of their chemical activity is called ( ……………………………………….) 2- The substance which loses an electron or more during a chemical reaction. (…………………………………………) 3- The substance which takes oxygen away ...
E2 reactions
... Relative rates for E2: 3°>2°>1°. The base must be strong. The LG should be good. The solvent should be polar. Coplanar (usually anti) transition state is ...
... Relative rates for E2: 3°>2°>1°. The base must be strong. The LG should be good. The solvent should be polar. Coplanar (usually anti) transition state is ...
Name: Date: AP Chemistry/Chemistry 145 Summer Assignment
... purified iron. The other product of the reaction is carbon dioxide gas. 2.10 g of iron is recovered from one such trial. ...
... purified iron. The other product of the reaction is carbon dioxide gas. 2.10 g of iron is recovered from one such trial. ...
Exam 2 Review Sheet for Friday, March 2 Exam Chem 1120, Spring
... Exam 2 Review Sheet for Friday, March 2 Exam Chem 1120, Spring 01, Robertson Our exam will include material from parts of chapters 13, 15 and 16. Only material that I have covered in class, have assigned homework problems for or is mentioned on this review sheet will be tested. The answers to all pr ...
... Exam 2 Review Sheet for Friday, March 2 Exam Chem 1120, Spring 01, Robertson Our exam will include material from parts of chapters 13, 15 and 16. Only material that I have covered in class, have assigned homework problems for or is mentioned on this review sheet will be tested. The answers to all pr ...
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.