Problems - TigerWeb
... You may assume that standard work-up conditions (i.e. those required to obtain a stable, neutral product, such as aqueous acid for example) follow each reaction on the exam. Clearly indicate stereochemistry where appropriate. Be careful not to show stereochemistry where none exists. You are strongly ...
... You may assume that standard work-up conditions (i.e. those required to obtain a stable, neutral product, such as aqueous acid for example) follow each reaction on the exam. Clearly indicate stereochemistry where appropriate. Be careful not to show stereochemistry where none exists. You are strongly ...
Catalysis Web Pages for Pre-University
... The Manufacture of Ammonia- The Haber Process Ammonia is another of the world’s bulk chemicals and is important for a wide range of uses from producing synthetic fertilisers, dyestuffs, explosives, polymers and many more. It is the direct combination of two non-metal elements which will not occur ef ...
... The Manufacture of Ammonia- The Haber Process Ammonia is another of the world’s bulk chemicals and is important for a wide range of uses from producing synthetic fertilisers, dyestuffs, explosives, polymers and many more. It is the direct combination of two non-metal elements which will not occur ef ...
1.Hydrocarbons contain only hydrogen and carbon. Which of the
... 3. You have two neutral solutions. One contains the indicator methyl red, which turns red in strongly acidic aqueous solutions but is otherwise yellow. The other contains the indicator phenol red, which turns red in strongly basic aqueous solutions but is otherwise yellow. Which of these steps would ...
... 3. You have two neutral solutions. One contains the indicator methyl red, which turns red in strongly acidic aqueous solutions but is otherwise yellow. The other contains the indicator phenol red, which turns red in strongly basic aqueous solutions but is otherwise yellow. Which of these steps would ...
Amines are compounds characterized by the presence of
... Industrially, amines are prepared from ammonia by alkylation with alcohols. They can also be prepared viareduction of nitriles to amines using hydrogen in the presence of a nickel catalyst. Amines are quite reactive due to their basicity as well as their nucleophilicity. Most primary amines are good ...
... Industrially, amines are prepared from ammonia by alkylation with alcohols. They can also be prepared viareduction of nitriles to amines using hydrogen in the presence of a nickel catalyst. Amines are quite reactive due to their basicity as well as their nucleophilicity. Most primary amines are good ...
Fe(H2O)63+ + H2O → ← H3O+ + Fe(H2O)5(OH)2+
... Dissolve 39.5 g KMnO4 in enough water to make 50.0 mL solution. Dissolve 12.5 g KMnO4 in enough water to make 50.0 mL solution. Dissolve 1.98 g KMnO4 in enough water to make 50.0 mL solution. Dilute 20.0 mL of 0.500 M KMnO4 to 50.0 mL. Dilute 2.50 mL of 1.00 M KMnO4 to 50.0 mL. ...
... Dissolve 39.5 g KMnO4 in enough water to make 50.0 mL solution. Dissolve 12.5 g KMnO4 in enough water to make 50.0 mL solution. Dissolve 1.98 g KMnO4 in enough water to make 50.0 mL solution. Dilute 20.0 mL of 0.500 M KMnO4 to 50.0 mL. Dilute 2.50 mL of 1.00 M KMnO4 to 50.0 mL. ...
Identification of Unknown Organic Compounds
... Some of these properties can be demonstrated by observing solubility behavior, while others can be seen in chemical reactions that are accompanied by color changes, precipitate formation, or other visible effects. 1. Solubility Tests The solubility of an organic compound in water, dilute acid, or di ...
... Some of these properties can be demonstrated by observing solubility behavior, while others can be seen in chemical reactions that are accompanied by color changes, precipitate formation, or other visible effects. 1. Solubility Tests The solubility of an organic compound in water, dilute acid, or di ...
exam qs on alcohols, alkenes, esters
... give two products which are structurally isomeric. Draw structural formulae for these two structural isomers and explain why the formation of two structural isomers is possible in this case. Alcohol selected ...
... give two products which are structurally isomeric. Draw structural formulae for these two structural isomers and explain why the formation of two structural isomers is possible in this case. Alcohol selected ...
Article Summaries
... In the system reported, methane is converted to methyl bisulfate using a platinum(II) bipyrimidine catalyst in concentrated sulfuric acid at temperatures as low as 100 oC. This system accomplishes 89% conversion of methane, as well as demonstrates 81% selectivity for formation of methyl bisulfate. A ...
... In the system reported, methane is converted to methyl bisulfate using a platinum(II) bipyrimidine catalyst in concentrated sulfuric acid at temperatures as low as 100 oC. This system accomplishes 89% conversion of methane, as well as demonstrates 81% selectivity for formation of methyl bisulfate. A ...
Group B_reaction of alkenes
... • thus, the 2 electrons that originally formed the π bond – form a new σ bond between C and the H from HBr. • the product is +vely charged since the sp2 C that did not form a bond with H has lost a share in an electron pair. • in 2nd step of reaction: a lone pair on the –vely charged bromide ion for ...
... • thus, the 2 electrons that originally formed the π bond – form a new σ bond between C and the H from HBr. • the product is +vely charged since the sp2 C that did not form a bond with H has lost a share in an electron pair. • in 2nd step of reaction: a lone pair on the –vely charged bromide ion for ...
The carbonyl group
... • Aldehydes and ketones react with a number of nitrogen containing compounds through nucleophilic addition and subsequent loss of water to give products that have a carbon nitrogen double bond. These reactions are useful in distinguishing an aldehyde or ketone from other functional groups. (General ...
... • Aldehydes and ketones react with a number of nitrogen containing compounds through nucleophilic addition and subsequent loss of water to give products that have a carbon nitrogen double bond. These reactions are useful in distinguishing an aldehyde or ketone from other functional groups. (General ...
Time
... -calculate rate of reactions using: r = Δc/Δt - explain the factors which effect reaction rates; predicting rate of reactions - concentration vs time graphs – instantaneous rate of reaction - use activation energy diagrams and kinetic energy diagrams to show effect of temperature and catalysts on re ...
... -calculate rate of reactions using: r = Δc/Δt - explain the factors which effect reaction rates; predicting rate of reactions - concentration vs time graphs – instantaneous rate of reaction - use activation energy diagrams and kinetic energy diagrams to show effect of temperature and catalysts on re ...
167KB - NZQA
... saturated to unsaturated / a (C=C) double bond forms. • Because water is removed / H and OH have been removed (from adjacent C atoms). • The but-2-ene is the major product / but-1-ene is the minor product. • A mixture of products is formed, because the two carbons adjacent to the carbon-bearing OH h ...
... saturated to unsaturated / a (C=C) double bond forms. • Because water is removed / H and OH have been removed (from adjacent C atoms). • The but-2-ene is the major product / but-1-ene is the minor product. • A mixture of products is formed, because the two carbons adjacent to the carbon-bearing OH h ...
NCEA Level 3 Chemistry (91391) 2013
... saturated to unsaturated / a (C=C) double bond forms. • Because water is removed / H and OH have been removed (from adjacent C atoms). • The but-2-ene is the major product / but-1-ene is the minor product. • A mixture of products is formed, because the two carbons adjacent to the carbon-bearing OH h ...
... saturated to unsaturated / a (C=C) double bond forms. • Because water is removed / H and OH have been removed (from adjacent C atoms). • The but-2-ene is the major product / but-1-ene is the minor product. • A mixture of products is formed, because the two carbons adjacent to the carbon-bearing OH h ...
Chapter 20. Aldehydes and Ketones
... Formaldehyde, H2C=O, actually is a highly unstable gas that cannot be stored. It readily undergoes a spontaneous, exothermic reaction upon standing to provide a compound called 1,3,5-trioxane. 1,3,5-Trioxane is a stable, crystalline solid, mp 61-62EC, of molecular formula C3H6O3. It has an NMR spect ...
... Formaldehyde, H2C=O, actually is a highly unstable gas that cannot be stored. It readily undergoes a spontaneous, exothermic reaction upon standing to provide a compound called 1,3,5-trioxane. 1,3,5-Trioxane is a stable, crystalline solid, mp 61-62EC, of molecular formula C3H6O3. It has an NMR spect ...
EXPERIMENT 3: Preparation and Reactivity of Alkyl Halides
... In this case, the reaction mechanism is SN1, the slow step being the breaking of the carbonhalogen bond. The carbocation then reacts rapidly with alcohol to form the ether. Organic halide reactivity parallels the stability of the corresponding carbocations. For saturated alkyl groups, this order is ...
... In this case, the reaction mechanism is SN1, the slow step being the breaking of the carbonhalogen bond. The carbocation then reacts rapidly with alcohol to form the ether. Organic halide reactivity parallels the stability of the corresponding carbocations. For saturated alkyl groups, this order is ...
carboxylic acid
... 1) protonation of carboxyl group 2) alcohol, as a nucleophile, attacks carbonyl carbon of protonated acid 3), 4) equlibria on oxygen between proton loss and gain 5) water formation (as a leaving group) 6) deprotonation and ester formation ...
... 1) protonation of carboxyl group 2) alcohol, as a nucleophile, attacks carbonyl carbon of protonated acid 3), 4) equlibria on oxygen between proton loss and gain 5) water formation (as a leaving group) 6) deprotonation and ester formation ...
22. Oxidation of Cyclohexanol
... chemistry. Oxidation of alcohols to form aldehydes, ketones or carboxylic acids is a fundamental and widely used reaction. Primary alcohols can be oxidized to aldehydes or carboxylic acids while secondary alcohols oxidize to ketones. Tertiary alcohols are resistant to oxidation. In this experiment c ...
... chemistry. Oxidation of alcohols to form aldehydes, ketones or carboxylic acids is a fundamental and widely used reaction. Primary alcohols can be oxidized to aldehydes or carboxylic acids while secondary alcohols oxidize to ketones. Tertiary alcohols are resistant to oxidation. In this experiment c ...
Lab 3: Building Blocks of Living Things Objectives: Understand
... subunits and these subunits are then absorbed across the intestinal lining into the blood ...
... subunits and these subunits are then absorbed across the intestinal lining into the blood ...
Acyl Anions Derived from Enol Ethers
... stabilization of the anion [CH3N02, pKa: 10.2; CH3CH2N02, pKa: 8.51. The anions derived from nitroalkanes give typical nucleophilic addition reactions with aldehydes (the Henry-Nef tandem reaction). Note that the nitro group can be changed directly to a carbonyl group via the Nef reaction (acidic co ...
... stabilization of the anion [CH3N02, pKa: 10.2; CH3CH2N02, pKa: 8.51. The anions derived from nitroalkanes give typical nucleophilic addition reactions with aldehydes (the Henry-Nef tandem reaction). Note that the nitro group can be changed directly to a carbonyl group via the Nef reaction (acidic co ...
Synthesis of Aliphatic Nitro Compounds1i2 A simple new
... Preparation of %nitrooctane from b-iodo~ctane.~2-Iodooctane (71.2 g., 0.30 mole) was poured into a stirred solution of 225 ml. dimethyl sulfoxide (DMSO) and 36 g. of sodium nitrite (0.52 mole) contained in a 500 ml. flask immersed in a water bath held a t room temperature. Stirring was continued for ...
... Preparation of %nitrooctane from b-iodo~ctane.~2-Iodooctane (71.2 g., 0.30 mole) was poured into a stirred solution of 225 ml. dimethyl sulfoxide (DMSO) and 36 g. of sodium nitrite (0.52 mole) contained in a 500 ml. flask immersed in a water bath held a t room temperature. Stirring was continued for ...
Petasis reaction
The Petasis reaction (alternatively called the Petasis borono–Mannich (PBM) reaction) is the chemical reaction of an amine, aldehyde, and vinyl- or aryl-boronic acid to form substituted amines.Reported in 1993 by Nicos Petasis as a practical method towards the synthesis of a geometrically pure antifungal agent, naftifine, the Petasis reaction can be described as a variation of the Mannich reaction. Rather than generating an enolate to form the substituted amine product, in the Petasis reaction, the vinyl group of the organoboronic acid serves as the nucleophile. In comparison to other methods of generating allyl amines, the Petasis reaction tolerates a multifunctional scaffold, with a variety of amines and organoboronic acids as potential starting materials. Additionally, the reaction does not require anhydrous or inert conditions. As a mild, selective synthesis, the Petasis reaction is useful in generating α-amino acids, and is utilized in combinatorial chemistry and drug discovery.