Synthesis of hetero cyclic compounds pyrazole and pyridiazine from
... Hydrazide derivatives have been frequently found in heterocyclic chemistry as key intermediates for synthesis of hetero cyclic compound and they have been reported to exhibit biological activity[1].The hydrazide is still used in many fields of chemical and biological as anti-TB or Tuberculosis mater ...
... Hydrazide derivatives have been frequently found in heterocyclic chemistry as key intermediates for synthesis of hetero cyclic compound and they have been reported to exhibit biological activity[1].The hydrazide is still used in many fields of chemical and biological as anti-TB or Tuberculosis mater ...
CHAPTER 1 CHEMICAL FOUNDATIONS 1 CHAPTER ONE
... a. Distillation separates components of a mixture, so the orange liquid is a mixture (has an average color of the yellow liquid and the red solid). Distillation utilizes boiling point differences to separate out the components of a mixture. Distillation is a physical change because the components of ...
... a. Distillation separates components of a mixture, so the orange liquid is a mixture (has an average color of the yellow liquid and the red solid). Distillation utilizes boiling point differences to separate out the components of a mixture. Distillation is a physical change because the components of ...
Full Text - Iraqi National Journal of Chemistry
... Hydrazide derivatives have been frequently found in heterocyclic chemistry as key intermediates for synthesis of hetero cyclic compound and they have been reported to exhibit biological activity[1].The hydrazide is still used in many fields of chemical and biological as anti-TB or Tuberculosis mater ...
... Hydrazide derivatives have been frequently found in heterocyclic chemistry as key intermediates for synthesis of hetero cyclic compound and they have been reported to exhibit biological activity[1].The hydrazide is still used in many fields of chemical and biological as anti-TB or Tuberculosis mater ...
asymmetric alkyne addition to aldehydes
... INTRODUCTION Chiral propargylic alcohols are important compounds, as this structural motif is often found in pharmaceutical compounds as well as natural products and can also serve as versatile synthetic intermediates.1 Although there are many methods available for the preparation of these compounds ...
... INTRODUCTION Chiral propargylic alcohols are important compounds, as this structural motif is often found in pharmaceutical compounds as well as natural products and can also serve as versatile synthetic intermediates.1 Although there are many methods available for the preparation of these compounds ...
Answers - U of L Class Index
... Why would BeCl2 be a molecular compound when all of the other alkaline earth metals react with chlorine gas to give ionic compounds? [2 marks] The Be2+ cation is very small. Therefore, its charge density is much higher than any other M2+ cation formed from an alkaline earth metal. This makes Be2+ a ...
... Why would BeCl2 be a molecular compound when all of the other alkaline earth metals react with chlorine gas to give ionic compounds? [2 marks] The Be2+ cation is very small. Therefore, its charge density is much higher than any other M2+ cation formed from an alkaline earth metal. This makes Be2+ a ...
Stench Chemicals Fact Sheet
... Stench chemicals are a group of chemicals that exhibit an extremely foul smell. Even though most stench chemicals have little direct impact on the physical health and safety of researchers, use of these chemicals without an odor control plan can have an effect on both the laboratory environment as w ...
... Stench chemicals are a group of chemicals that exhibit an extremely foul smell. Even though most stench chemicals have little direct impact on the physical health and safety of researchers, use of these chemicals without an odor control plan can have an effect on both the laboratory environment as w ...
Oxidation with Perhalogenated, Water-soluble Metalloporphyrins: Application to Oxidation of Substituted 2-Methylpyrroles
... destruction. 5 Such perhalogenated metalloporphyrins can be rendered water soluble by sulfonation of the meta-position of the phenyl rings. 6 We report herein a straightforward and efficient oxidation of substituted 2-methylpyrroles using the perchlorinated, sulfonated catalyst iron(III) meso-tetra( ...
... destruction. 5 Such perhalogenated metalloporphyrins can be rendered water soluble by sulfonation of the meta-position of the phenyl rings. 6 We report herein a straightforward and efficient oxidation of substituted 2-methylpyrroles using the perchlorinated, sulfonated catalyst iron(III) meso-tetra( ...
Unit 2 - Carbon Compounds
... o The alkanes are a subset of the set of hydrocarbons. o The general formula for the alkanes is CnH2n+2. o An alkane can be identified from the ‘-ane’ ending. o Straight-chain alkanes can be named from molecular formulae, shortened and full structural formulae (only C1 to C8). ...
... o The alkanes are a subset of the set of hydrocarbons. o The general formula for the alkanes is CnH2n+2. o An alkane can be identified from the ‘-ane’ ending. o Straight-chain alkanes can be named from molecular formulae, shortened and full structural formulae (only C1 to C8). ...
5H2O → CuSO4 + 5H2O(g)
... number of -1 (except when bonded to oxygen or in polyatomic ions). 4) The sum of oxidation numbers is 0 for a neutral compound and is equal to the net charge for a polyatomic ion. ...
... number of -1 (except when bonded to oxygen or in polyatomic ions). 4) The sum of oxidation numbers is 0 for a neutral compound and is equal to the net charge for a polyatomic ion. ...
HYDROCARBONS HYDROCARBONS Types of Hydrocarbons
... HYDROCARBONS • Alkanes contain only single (σ ) bonds and have the generic molecular formula: [C nH2n+2] • Alkenes also contain double (σ + π) bonds and have the generic molecular formula: [C nH2n] • Alkynes contain triple (σ + 2π) bonds and have the generic molecular formula: [C nH2n-2 ] ...
... HYDROCARBONS • Alkanes contain only single (σ ) bonds and have the generic molecular formula: [C nH2n+2] • Alkenes also contain double (σ + π) bonds and have the generic molecular formula: [C nH2n] • Alkynes contain triple (σ + 2π) bonds and have the generic molecular formula: [C nH2n-2 ] ...
Addition of ketene to ethylene oxide
... intermediate in the preparation of surface active agents • . This involves a reaction with long chain carboxylic acids to produce a molecule containing both hydrophobic and hydrophilic characteristics. Ethylene oxide undergoes attack by substances containing active hydrogen and also by some substanc ...
... intermediate in the preparation of surface active agents • . This involves a reaction with long chain carboxylic acids to produce a molecule containing both hydrophobic and hydrophilic characteristics. Ethylene oxide undergoes attack by substances containing active hydrogen and also by some substanc ...
Introduction
... 1) An atom (or molecule) in its elemental state has an oxidation number of 0. 2) An atom in a monatomic ion (Na+, Cl-) has an oxidation number identical to its charge. 3a) Hydrogen has an oxidation number of +1, unless it is combined with a metal, in which case it has an oxidation number of –1. 3b) ...
... 1) An atom (or molecule) in its elemental state has an oxidation number of 0. 2) An atom in a monatomic ion (Na+, Cl-) has an oxidation number identical to its charge. 3a) Hydrogen has an oxidation number of +1, unless it is combined with a metal, in which case it has an oxidation number of –1. 3b) ...
CHEM 202_ Part 2
... The carbonyl group can be converted to amino group using ammonia or primary amine in the presence of H2 and catalyst ...
... The carbonyl group can be converted to amino group using ammonia or primary amine in the presence of H2 and catalyst ...
Root Names for Hydrocarbons
... groups to indicate where it is attached. Start the numbering from whichever end of the parent chain will give rise to the lowest set of numbers. The lowest set is selected on the basis of the lowest number at the first point of difference. ...
... groups to indicate where it is attached. Start the numbering from whichever end of the parent chain will give rise to the lowest set of numbers. The lowest set is selected on the basis of the lowest number at the first point of difference. ...
WRITING AP EQUATIONS AP equation sets are found in the free
... A metal sulfide reacts with oxygen to produce the metallic oxide and sulfur dioxide. ...
... A metal sulfide reacts with oxygen to produce the metallic oxide and sulfur dioxide. ...
FINAL EXAM REVIEW PROBLEMS
... b. 0.010 M Al2(SO4)3 54. Calculate the number of moles of Cl- ions in 1.75 L of 1.0 x 10-3 M AlCl3. 55. What volume of 12 M HCl must be taken to prepare 0.75 L of 0.45 M HCl? 56. When aqueous Na2SO4 and Pb(NO3)2 are mixed, PbSO4 precipitates. Calculate the PbSO4 formed when 1.25 L of 0.0500 M Pb(NO ...
... b. 0.010 M Al2(SO4)3 54. Calculate the number of moles of Cl- ions in 1.75 L of 1.0 x 10-3 M AlCl3. 55. What volume of 12 M HCl must be taken to prepare 0.75 L of 0.45 M HCl? 56. When aqueous Na2SO4 and Pb(NO3)2 are mixed, PbSO4 precipitates. Calculate the PbSO4 formed when 1.25 L of 0.0500 M Pb(NO ...
WRITING AP EQUATIONS AP equation sets are found in the
... A metal sulfide reacts with oxygen to produce the metallic oxide and sulfur dioxide. ...
... A metal sulfide reacts with oxygen to produce the metallic oxide and sulfur dioxide. ...
Lectures 15, 16 and 17
... has the weaker conjugate base? Which conjugate base is the better leaving group? Which of these acids has the higher pka? CF3SO3H is the weaker conjugate base. CF3SO3H is the better leaving group because it is the weaker conjugate base. CH3SO3H, with the electron donating methyl group, has the highe ...
... has the weaker conjugate base? Which conjugate base is the better leaving group? Which of these acids has the higher pka? CF3SO3H is the weaker conjugate base. CF3SO3H is the better leaving group because it is the weaker conjugate base. CH3SO3H, with the electron donating methyl group, has the highe ...
Topic 4 Chemistry of the Elements of the Main Group
... H can form hydrides (negatively charged H) with a whole range of polarity, from ionic hydrides Cs-H ( = 1.4) to non-polar covalent hydrides B-H ( = 0.1). H can form hydrogen compounds (H is positively charged) with a whole range of polarity, from ionic hydrogen halides HF ( = 1.9) to non-polar ...
... H can form hydrides (negatively charged H) with a whole range of polarity, from ionic hydrides Cs-H ( = 1.4) to non-polar covalent hydrides B-H ( = 0.1). H can form hydrogen compounds (H is positively charged) with a whole range of polarity, from ionic hydrogen halides HF ( = 1.9) to non-polar ...
Final Study Guide
... Give IUPAC and common names for alcohols, phenols, and Thiols; draw their condensed structural formulas. Give the IUPAC names of ethers; draw the condensed structural formula. Describe some physical properties of alcohols, phenols, and ethers. Write equations for combustion, dehydration, and oxidati ...
... Give IUPAC and common names for alcohols, phenols, and Thiols; draw their condensed structural formulas. Give the IUPAC names of ethers; draw the condensed structural formula. Describe some physical properties of alcohols, phenols, and ethers. Write equations for combustion, dehydration, and oxidati ...
Unit 2 - Organic Chemistry Straight Chain Alkanes
... - Double and triple bonds are easier to break than single bonds - Hence compounds containing these are more reactive than those with single bonds Halogens - Unequal sharing of electrons result in polar bonds - This increases intermolecular attraction, increasing the boiling point and melting point ...
... - Double and triple bonds are easier to break than single bonds - Hence compounds containing these are more reactive than those with single bonds Halogens - Unequal sharing of electrons result in polar bonds - This increases intermolecular attraction, increasing the boiling point and melting point ...
Name - TeacherWeb
... Most nonmetals are reactive, so they often form compounds. In fact, fluorine (F) is the most reactive element known. Atoms of nonmetals usually gain or share electrons. Only Group 18 of the periodic table contains elements that are all nonmetals. Groups 14 – 17 are a mixture of nonmetals and other k ...
... Most nonmetals are reactive, so they often form compounds. In fact, fluorine (F) is the most reactive element known. Atoms of nonmetals usually gain or share electrons. Only Group 18 of the periodic table contains elements that are all nonmetals. Groups 14 – 17 are a mixture of nonmetals and other k ...
Writing Chemical Formulas
... The total of the oxidation numbers in a compound must equal zero. Hydrogen's oxidation number is +1 and oxygen's is -2. With one H and one O, the total is not 0, it is -1. ...
... The total of the oxidation numbers in a compound must equal zero. Hydrogen's oxidation number is +1 and oxygen's is -2. With one H and one O, the total is not 0, it is -1. ...
Summer Assignment
... c. How many grams of hydrogen bromide gas can be produced using the amounts in (b)? d. How many grams of excess reactant are left unreacted? e. What volume of HBr, measured at STP is produced in (b)? 6. When ammonia gas, oxygen gas and methane gas (CH4) are combined, the products are hydrogen cyanid ...
... c. How many grams of hydrogen bromide gas can be produced using the amounts in (b)? d. How many grams of excess reactant are left unreacted? e. What volume of HBr, measured at STP is produced in (b)? 6. When ammonia gas, oxygen gas and methane gas (CH4) are combined, the products are hydrogen cyanid ...
AP CHEMISTRY SUMMER ASSIGNMENT
... Part II. Atoms, Molecules and Ions 2.1 Fundamental Chemical Laws The Law of Conservation of Mass: mass is neither lost nor gained during an ordinary chemical reaction. In other words, the products of a reaction must have the same number of type of atoms as the reactants. Law of Definite Proportion: ...
... Part II. Atoms, Molecules and Ions 2.1 Fundamental Chemical Laws The Law of Conservation of Mass: mass is neither lost nor gained during an ordinary chemical reaction. In other words, the products of a reaction must have the same number of type of atoms as the reactants. Law of Definite Proportion: ...
Organosulfur compounds
Organosulfur compounds are organic compounds that contain sulfur. They are often associated with foul odors, but many of the sweetest compounds known are organosulfur derivatives, e.g., saccharin. Nature abounds with organosulfur compounds—sulfur is essential for life. Of the 20 common amino acids, two (cysteine and methionine) are organosulfur compounds, and the antibiotics penicillin (pictured below) and sulfa drugs both contain sulfur. While sulfur-containing antibiotics save many lives, sulfur mustard is a deadly chemical warfare agent. Fossil fuels, coal, petroleum, and natural gas, which are derived from ancient organisms, necessarily contain organosulfur compounds, the removal of which is a major focus of oil refineries.Sulfur shares the chalcogen group with oxygen, selenium and tellurium, and it is expected that organosulfur compounds have similarities with carbon–oxygen, carbon–selenium and carbon–tellurium compounds, which is true to some extent.A classical chemical test for the detection of sulfur compounds is the Carius halogen method.