Old EXAM I - gozips.uakron.edu
... the lighter object. both objects have the same volume. it is impossible to tell without additional information. ...
... the lighter object. both objects have the same volume. it is impossible to tell without additional information. ...
Chapter 5 - U of L Class Index
... case. Side reactions or the equilibrium can prevent reactions from going to completion. When chemists perform reactions, there are two things they want to know; a) what is the theoretical yield of the reaction and b) what is the actual yield of the reaction. • The theoretical yield is the calculated ...
... case. Side reactions or the equilibrium can prevent reactions from going to completion. When chemists perform reactions, there are two things they want to know; a) what is the theoretical yield of the reaction and b) what is the actual yield of the reaction. • The theoretical yield is the calculated ...
Wed March 3 lecture
... Ch 18 — Additions to the carbonyl group; chemistry of aldehydes and ketones Before we begin studying reactions of aldehydes and ketones, it's worthwhile to revisit some chemistry that can be used for their preparation. We've seen several reactions recently that have been described as oxidations or r ...
... Ch 18 — Additions to the carbonyl group; chemistry of aldehydes and ketones Before we begin studying reactions of aldehydes and ketones, it's worthwhile to revisit some chemistry that can be used for their preparation. We've seen several reactions recently that have been described as oxidations or r ...
Alkenes - Calderglen High School
... Calderglen High Chemistry Nature’s Chemistry Alkenes Homework 13. The key below shows the name and general formula of some families of hydrocarbons. ...
... Calderglen High Chemistry Nature’s Chemistry Alkenes Homework 13. The key below shows the name and general formula of some families of hydrocarbons. ...
File - Science With BLT
... ____ 74. In what kind of reaction does a single compound produce two or more simpler substances? a. decomposition reaction c. single-replacement reaction b. synthesis reaction d. ionic reaction ____ 75. The equation A + BX AX + B is the general equation for a a. double-replacement reaction. c. si ...
... ____ 74. In what kind of reaction does a single compound produce two or more simpler substances? a. decomposition reaction c. single-replacement reaction b. synthesis reaction d. ionic reaction ____ 75. The equation A + BX AX + B is the general equation for a a. double-replacement reaction. c. si ...
Dehydrating Cyclohexanol
... This also explained why the result of the unknown product was faint red. The actual yield of cyclohexene was 1.6457g and the percentage yield was 67.69%. The most possible reason for the error of yield was the product was weighed, a little of the product was used to run the qualitative tests. In add ...
... This also explained why the result of the unknown product was faint red. The actual yield of cyclohexene was 1.6457g and the percentage yield was 67.69%. The most possible reason for the error of yield was the product was weighed, a little of the product was used to run the qualitative tests. In add ...
This exam will consist of 30-35 multiple choice or short answer
... Why does 1-bromobutane react faster than 1-chlorobutane? Explain the two types of reactions used in this experiment to determine SN2 and SN1 reactivity. How could you tell a reaction was occurring? What are the products under both reaction conditions (what group replaces the Br or Cl leaving group)? ...
... Why does 1-bromobutane react faster than 1-chlorobutane? Explain the two types of reactions used in this experiment to determine SN2 and SN1 reactivity. How could you tell a reaction was occurring? What are the products under both reaction conditions (what group replaces the Br or Cl leaving group)? ...
5.7 Hemiacetals and hemiketals Aldehydes react with alcohols to
... Although it might seem like free rotation would allow the OH groups to point in any direction, the necessity of twisting the ring in such a way as to position the OH group on the #5 C in such a way as to react with the partially positively charged carbon atom locks the other OH groups in the configu ...
... Although it might seem like free rotation would allow the OH groups to point in any direction, the necessity of twisting the ring in such a way as to position the OH group on the #5 C in such a way as to react with the partially positively charged carbon atom locks the other OH groups in the configu ...
Answers
... One of the equivalents of hydroxide will be used to do the very fast acid/base reaction with the acidic carboxylic acid proton to become water. The catalytic amount (0.1 equiv.) of hydroxide left will do the beta hydroxycarbonyl elimination. 5. These two metabolic reactions may occur in either direc ...
... One of the equivalents of hydroxide will be used to do the very fast acid/base reaction with the acidic carboxylic acid proton to become water. The catalytic amount (0.1 equiv.) of hydroxide left will do the beta hydroxycarbonyl elimination. 5. These two metabolic reactions may occur in either direc ...
Carbonyl Compounds_ Properties and Reactions
... Optical activity: The mechanism depends on both the concentration of the nucleophile and the concentration of the carbonyl (it is BIMOLECULAR). The product that results contains a chiral centre (carbonyl carbon) and so will show optical activity. N.B. See nucleophilic substitution reactions of halog ...
... Optical activity: The mechanism depends on both the concentration of the nucleophile and the concentration of the carbonyl (it is BIMOLECULAR). The product that results contains a chiral centre (carbonyl carbon) and so will show optical activity. N.B. See nucleophilic substitution reactions of halog ...
Carbonyl Compounds
... NaBH4 is used in aqueous ethanol. A similar reduction takes place with the more powerful reducing agent, lithium tetrahydridoaluminate(III), LiAlH4. This requires scrupulously dry conditions and is usually used in tetrahydrofuran which has been dried with sodium metal. This reduction is specific and ...
... NaBH4 is used in aqueous ethanol. A similar reduction takes place with the more powerful reducing agent, lithium tetrahydridoaluminate(III), LiAlH4. This requires scrupulously dry conditions and is usually used in tetrahydrofuran which has been dried with sodium metal. This reduction is specific and ...
S.O.L. Review
... 9. If the temperature of a reaction is increased, the reaction proceeds at a much quicker rate because the – a. Activation energy increases b. Energy of the products increases c. Frequency of collisions between reactants increases d. Energy of the activated complex increases ...
... 9. If the temperature of a reaction is increased, the reaction proceeds at a much quicker rate because the – a. Activation energy increases b. Energy of the products increases c. Frequency of collisions between reactants increases d. Energy of the activated complex increases ...
Name - Deans Community High School
... 1. Explain the change in covalent radius of the elements a) across the Periodic table from lithium to fluorine. .............................................................. ...
... 1. Explain the change in covalent radius of the elements a) across the Periodic table from lithium to fluorine. .............................................................. ...
chemical reaction
... the oxidation state(O.S) of an atom in the pure (uncombined) element is 0. The total (sum) of the oxidation state of all the atoms in a molecule or formula unit is 0. For an ion total of the oxidation state is equal to the charge on the ion. In their compounds the alkali metals (1a groups Li, Na, K, ...
... the oxidation state(O.S) of an atom in the pure (uncombined) element is 0. The total (sum) of the oxidation state of all the atoms in a molecule or formula unit is 0. For an ion total of the oxidation state is equal to the charge on the ion. In their compounds the alkali metals (1a groups Li, Na, K, ...
Chapter 8 Alkenes and Alkynes II
... Modern Statement of Markovnikov’s Rule: In the ionic addition of an unsymmetrical reagent to a double bond, the positive portion of the adding reagent attaches itself to a carbon atom of the double bond so as to yield the more stable carbocation as an intermediate ...
... Modern Statement of Markovnikov’s Rule: In the ionic addition of an unsymmetrical reagent to a double bond, the positive portion of the adding reagent attaches itself to a carbon atom of the double bond so as to yield the more stable carbocation as an intermediate ...
towards the synthesis of functionalised macrocyclic receptors
... The Williamson ether synthesis is commonly used in the synthesis of macrocyclic polyethers. This classic reaction involves the SN2 displacement of an alkyl halide with an alkoxide anion21 when a diol and dihalide are reacted together in presence of a base. Recently it was reported that the halide le ...
... The Williamson ether synthesis is commonly used in the synthesis of macrocyclic polyethers. This classic reaction involves the SN2 displacement of an alkyl halide with an alkoxide anion21 when a diol and dihalide are reacted together in presence of a base. Recently it was reported that the halide le ...
The Chemistry of Essential Oils - chemistryteaching / Chemistry
... in spearmint oil, are optical isomers. If synthesized in the laboratory, the carvone produced would be a racemic mixture. Explain what this is and why it happens. (3) ...
... in spearmint oil, are optical isomers. If synthesized in the laboratory, the carvone produced would be a racemic mixture. Explain what this is and why it happens. (3) ...
Organic chemistry - Mr. Amundson`s DCC science
... dependent on the concentration of both. This makes it bimolecular. S=substitution N=nucleophilic 2=bimolecular ...
... dependent on the concentration of both. This makes it bimolecular. S=substitution N=nucleophilic 2=bimolecular ...
Chemical Reactions - Waukee Community School District Blogs
... 2Al+3 + 3SO4-2 + 6Na+1 + 6OH-1 ---- 2Al(OH)3 + 6Na+1 + 3SO4-2 ...
... 2Al+3 + 3SO4-2 + 6Na+1 + 6OH-1 ---- 2Al(OH)3 + 6Na+1 + 3SO4-2 ...
Exam 3 - Chemistry
... Draw an energy diagram. Label the axes, starting material, product, EAs and ΔHrxn; Draw the structures of the transition states for the rate limiting step and any reactive intermediates; identif ...
... Draw an energy diagram. Label the axes, starting material, product, EAs and ΔHrxn; Draw the structures of the transition states for the rate limiting step and any reactive intermediates; identif ...
level three chemistry: organics
... being able to describe how to use a range of reagents to distinguish between given substances based on observations including colour, separation, bubbles, reactivity, smell etc. I can show my ability to link my understanding of different organic reactions by filling in products, reactants, reagents ...
... being able to describe how to use a range of reagents to distinguish between given substances based on observations including colour, separation, bubbles, reactivity, smell etc. I can show my ability to link my understanding of different organic reactions by filling in products, reactants, reagents ...
Irreversible Changes
... Most changes that cannot be reversed are chemical reactions where a new material is formed, and it is not possible or extremely difficult to recover the original materials. Children will experience such changes all the time in their everyday life and in the science activities they do in school, but ...
... Most changes that cannot be reversed are chemical reactions where a new material is formed, and it is not possible or extremely difficult to recover the original materials. Children will experience such changes all the time in their everyday life and in the science activities they do in school, but ...
1.1 10 Oxidation of alcohols and aldehydes
... H+/Cr2O72−. s 4HE OXIDISING MIXTURE CAN BE MADE FROM POTASSIUM DICHROMATE +2Cr2O7, and sulfuric acid, H2SO. During the reaction, the acidified potassium dichromate changes from orange to green. Remember that tertiary alcohols are not oxidised by acidified dichromate ions. ...
... H+/Cr2O72−. s 4HE OXIDISING MIXTURE CAN BE MADE FROM POTASSIUM DICHROMATE +2Cr2O7, and sulfuric acid, H2SO. During the reaction, the acidified potassium dichromate changes from orange to green. Remember that tertiary alcohols are not oxidised by acidified dichromate ions. ...
PREP Chemistry 2008 Final Exam Review Problems
... b. Solid aluminum metal reacts with aqueous zinc chloride to produce solid zinc metal and aqueous aluminum chloride. c. Aqueous aluminum sulfate reacts with aqueous barium hydroxide to produce aluminum hydroxide and barium sulfate. Use solubility rules to determine states of products. d. Propane (C3 ...
... b. Solid aluminum metal reacts with aqueous zinc chloride to produce solid zinc metal and aqueous aluminum chloride. c. Aqueous aluminum sulfate reacts with aqueous barium hydroxide to produce aluminum hydroxide and barium sulfate. Use solubility rules to determine states of products. d. Propane (C3 ...
Exam Name___________________________________
... C) a carbon joined to two hydrogens by single covalent bonds D) a sulfur and a hydrogen joined to a carbon by covalent bonds E) a nitrogen and two hydrogens joined to a carbon by covalent bonds ...
... C) a carbon joined to two hydrogens by single covalent bonds D) a sulfur and a hydrogen joined to a carbon by covalent bonds E) a nitrogen and two hydrogens joined to a carbon by covalent bonds ...
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.