POLYMER END-GROUP ANALYSIS: THE DETERMINATION OF
... 160°C for 2 hours. Dissolve the solid in 100 mL of DMF. Your glassware must be dry before you start. Do not add any water to this solution or to any of the samples until specified in the procedure. If it is necessary to store the solution for a week, obtain a small bottle from the stockroom and line ...
... 160°C for 2 hours. Dissolve the solid in 100 mL of DMF. Your glassware must be dry before you start. Do not add any water to this solution or to any of the samples until specified in the procedure. If it is necessary to store the solution for a week, obtain a small bottle from the stockroom and line ...
how reactions occur
... • Catalysts are substances that speed up chemical reactions without being used up in the reaction. • Homogeneous catalysts are substances that are distributed uniformly throughout a reaction mixture. • Heterogeneous catalysts are substances normally used in the form of solids with large surface area ...
... • Catalysts are substances that speed up chemical reactions without being used up in the reaction. • Homogeneous catalysts are substances that are distributed uniformly throughout a reaction mixture. • Heterogeneous catalysts are substances normally used in the form of solids with large surface area ...
RuP(OMe) 2
... Hemilabile ligands have been of great interest to chemists working toward the development of molecular sensors. Hemilabile coordination is found to occur amongst polydentate ligands that contain both chemically inert and labile sites bound to a metal center. In the presence of molecules with a stron ...
... Hemilabile ligands have been of great interest to chemists working toward the development of molecular sensors. Hemilabile coordination is found to occur amongst polydentate ligands that contain both chemically inert and labile sites bound to a metal center. In the presence of molecules with a stron ...
Organic Chemistry:
... Why so many C compounds? • Carbon atoms can bond with other carbon atoms in chains, rings, and networks. • Bonds are covalent. ...
... Why so many C compounds? • Carbon atoms can bond with other carbon atoms in chains, rings, and networks. • Bonds are covalent. ...
Combined
... 15. A white solid dissolves in water to form an acidic solution. The solution reacts with aqueous sodium hydroxide on heating to give a gas. The solid is probably A. calcium oxide. B. sodium carbonate. C. ammonium chloride. D. sodium chloride. ...
... 15. A white solid dissolves in water to form an acidic solution. The solution reacts with aqueous sodium hydroxide on heating to give a gas. The solid is probably A. calcium oxide. B. sodium carbonate. C. ammonium chloride. D. sodium chloride. ...
communication - Kyushu University Library
... most important and fundamental reactions in fine chemical productions.[1] However, the reaction with artificial catalysts[2] still has not been attained though enzymatic reactions have many drawbacks.[3] In this context, we have investigated to develop and expand the substrate scope of transition me ...
... most important and fundamental reactions in fine chemical productions.[1] However, the reaction with artificial catalysts[2] still has not been attained though enzymatic reactions have many drawbacks.[3] In this context, we have investigated to develop and expand the substrate scope of transition me ...
Final Review 2006
... d. change in total mass of substances ____ 31. A solid produced by a chemical reaction in solution that separates from the solution is called a. a precipitate. c. a molecule. b. a reactant. d. the mass of the product. ____ 32. After the correct formula for a reactant in an equation has been written, ...
... d. change in total mass of substances ____ 31. A solid produced by a chemical reaction in solution that separates from the solution is called a. a precipitate. c. a molecule. b. a reactant. d. the mass of the product. ____ 32. After the correct formula for a reactant in an equation has been written, ...
Reaction Prediction Notes + Practice - mvhs
... Salts of weak acid + strong base are basic Salts of strong acid + strong base are neutral Salts of strong acid + weak base are acidic Salts of weak acid + weak base can be acidic, basic or neutral depending on Ka and Kb (which ever is greater) Sample Problems: 1. A solution of lead nitrate i ...
... Salts of weak acid + strong base are basic Salts of strong acid + strong base are neutral Salts of strong acid + weak base are acidic Salts of weak acid + weak base can be acidic, basic or neutral depending on Ka and Kb (which ever is greater) Sample Problems: 1. A solution of lead nitrate i ...
Day 8
... 5. “Bond” these strands with sodium borate cross-linking students 6. Investigate the properties of this cross-linked polymer (vs. the individual strand in 3 above). Specifically note that the movement of the cross-linked polymer strands is hindered (transition form-flowing liquid to flowing solid), ...
... 5. “Bond” these strands with sodium borate cross-linking students 6. Investigate the properties of this cross-linked polymer (vs. the individual strand in 3 above). Specifically note that the movement of the cross-linked polymer strands is hindered (transition form-flowing liquid to flowing solid), ...
Experiment 15: Reduction and Oxidation of Organic Compounds
... is the more powerful of the two, capable of reducing aldehydes, ketones, carboxylic acids, esters and amides, NaBH4 is easier to handle and more selective, reducing only aldehydes and ketones. Sodium borohydride can be utilized under non-anhydrous conditions and in alcoholic solutions, in contrast t ...
... is the more powerful of the two, capable of reducing aldehydes, ketones, carboxylic acids, esters and amides, NaBH4 is easier to handle and more selective, reducing only aldehydes and ketones. Sodium borohydride can be utilized under non-anhydrous conditions and in alcoholic solutions, in contrast t ...
MSTA WOW Chemistry
... 1. Mix some water and food coloring in a plastic cup 2. If you lamp oil is green like the rubbing alcohol, then you need to add a different shade of food coloring to a small amount in a plastic cup. 3. Pour about 10 mL of Honey down the center of the graduated cylinder and try not to let it run down ...
... 1. Mix some water and food coloring in a plastic cup 2. If you lamp oil is green like the rubbing alcohol, then you need to add a different shade of food coloring to a small amount in a plastic cup. 3. Pour about 10 mL of Honey down the center of the graduated cylinder and try not to let it run down ...
SirH Bond Activation by Electrophilic Phosphinidene Complexes
... phosphorus pz orbital is displaced by the incoming nucleophile. Upon formation of the final product, the charge at phosphorus again increases as the electropositive SiH3 fragment is added to P. However, the charge at N does not increase from transition state to product because the positive charge at ...
... phosphorus pz orbital is displaced by the incoming nucleophile. Upon formation of the final product, the charge at phosphorus again increases as the electropositive SiH3 fragment is added to P. However, the charge at N does not increase from transition state to product because the positive charge at ...
Set 6
... (c) [Fe(CN)6]3-? The iron ion in this octahedral complex, which contains six negatively charged CN"" ion ligands, is Fe J +, which is a dS-metal ion. Cyanide ion is a very strong-field ligand, so this is a strong-field complex and hence is low spin, with S = 1/2 and one unpaired electron. The config ...
... (c) [Fe(CN)6]3-? The iron ion in this octahedral complex, which contains six negatively charged CN"" ion ligands, is Fe J +, which is a dS-metal ion. Cyanide ion is a very strong-field ligand, so this is a strong-field complex and hence is low spin, with S = 1/2 and one unpaired electron. The config ...
molecules
... temperature, filtered, washed with water and acetone and dried. The polymer supported porphyrin is insoluble in common organic solvents. The reflectance spectrum clearly indicates a Soret band at 488 nm and a Q band at 566 nm. IR spectrum of the solid supported manganese porphyrin shows (S=O) at 14 ...
... temperature, filtered, washed with water and acetone and dried. The polymer supported porphyrin is insoluble in common organic solvents. The reflectance spectrum clearly indicates a Soret band at 488 nm and a Q band at 566 nm. IR spectrum of the solid supported manganese porphyrin shows (S=O) at 14 ...
here - EPLAW Patent Blog
... zone of a reactor to the outlet zone. This drop in pressure can be significant in fixed bed FT reactors because of the combination of (a) a preferred high feed rate (for good throughput), (b) small diameter tubes (for good heat transfer), and (c) the presence of catalyst particles. Generally speakin ...
... zone of a reactor to the outlet zone. This drop in pressure can be significant in fixed bed FT reactors because of the combination of (a) a preferred high feed rate (for good throughput), (b) small diameter tubes (for good heat transfer), and (c) the presence of catalyst particles. Generally speakin ...
Nucleophilic
... Nucleophilicity usually increases going down a column of the periodic chart. Thus, sulfur nucleophiles are more reactive than oxygen nucleophiles. Halides: I– > Br– > Cl– > F–. Negatively charged nucleophiles are usually more reactive than neutral nucleophiles. Note that elimination is a competing ...
... Nucleophilicity usually increases going down a column of the periodic chart. Thus, sulfur nucleophiles are more reactive than oxygen nucleophiles. Halides: I– > Br– > Cl– > F–. Negatively charged nucleophiles are usually more reactive than neutral nucleophiles. Note that elimination is a competing ...
7. Alkenes: Reactions and Synthesis
... • Oxidizing reagents other than ozone also cleave alkenes • Potassium permanganate (KMnO4) can produce carboxylic acids and carbon dioxide if H’s are present on C=C O ...
... • Oxidizing reagents other than ozone also cleave alkenes • Potassium permanganate (KMnO4) can produce carboxylic acids and carbon dioxide if H’s are present on C=C O ...
2002
... 6. The validity of the assignments has now been extended to one year. This means that these assignments can be submitted upto June 2003. If you submit these assignments by 31 st October 2002 you will be permitted to appear in December, 2002 exam. And, if you submit these assignments by 30th April, 2 ...
... 6. The validity of the assignments has now been extended to one year. This means that these assignments can be submitted upto June 2003. If you submit these assignments by 31 st October 2002 you will be permitted to appear in December, 2002 exam. And, if you submit these assignments by 30th April, 2 ...
X012/13/02
... 4. In a PPA the manganese content of a steel paper clip is determined by converting the manganese into purple permanganate ions, the concentration of which is measured using colorimetry. At the start of the activity, a calibration graph has to be drawn. (a) What data must be collected to al ...
... 4. In a PPA the manganese content of a steel paper clip is determined by converting the manganese into purple permanganate ions, the concentration of which is measured using colorimetry. At the start of the activity, a calibration graph has to be drawn. (a) What data must be collected to al ...
Nucleophilicity and Basicity Factors in Organic Reactions
... For two or more molecules incorporating nucleophilic atoms of the same kind and charge, the stronger base is usually the stronger nucleophile. Thus, 2,2,2-trifluroethoxide (pKa 12) is a weaker base and nucleophile than ethoxide (pKa 16). A notable exception to this rule occurs when a vicinal (adjace ...
... For two or more molecules incorporating nucleophilic atoms of the same kind and charge, the stronger base is usually the stronger nucleophile. Thus, 2,2,2-trifluroethoxide (pKa 12) is a weaker base and nucleophile than ethoxide (pKa 16). A notable exception to this rule occurs when a vicinal (adjace ...
Transition Metals - wellswaysciences
... oxygen to form RED oxyhaemoglobin. • When oxygen is removed it is replaced by water to form BLUE deoxyhaemoglobin (which is why veins look blue as they carry deoxygenated blood back to the lungs). ...
... oxygen to form RED oxyhaemoglobin. • When oxygen is removed it is replaced by water to form BLUE deoxyhaemoglobin (which is why veins look blue as they carry deoxygenated blood back to the lungs). ...
Hydroformylation
Hydroformylation, also known as oxo synthesis or oxo process, is an important homogeneously catalyzed industrial process for the production of aldehydes from alkenes. This chemical reaction entails the addition of a formyl group (CHO) and a hydrogen atom to a carbon-carbon double bond. This process has undergone continuous growth since its invention in 1938: Production capacity reached 6.6×106 tons in 1995. It is important because the resulting aldehydes are easily converted into many secondary products. For example, the resulting aldehydes are hydrogenated to alcohols that are converted to plasticizers or detergents. Hydroformylation is also used in specialty chemicals, relevant to the organic synthesis of fragrances and natural products. The development of hydroformylation, which originated within the German coal-based industry, is considered one of the premier achievements of 20th-century industrial chemistry.The process typically entails treatment of an alkene with high pressures (between 10 to 100 atmospheres) of carbon monoxide and hydrogen at temperatures between 40 and 200 °C. Transition metal catalysts are required.