Homo/hetero-genous/bio-catalysis: HOMOGENOUS: * catalyst and reagents are in the same phase * in solution – soluble and/or liquid reagents react in the liquid phase * Can be: organic molecules‚ transition metal complexes‚ inorganic salts‚ lanthanide complexes * Powers: * Efficiency of an homogeneous process * Fine tuning of activity with the choice of ligands * Greater selectivity (region‚ chemo selectivity) * Better potential for asymmetric catalysis * Better
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Ag (d) Cu + Pb2+ → Cu2+ + Pb 2. The property of a colloidal solution in which the dispersion medium moves when placed in an electric field is called (a) electrophoresis (b) cataphoresis (c) electro-osmosis (d) both a and b 3. For the cobalt complex [Co(H2O)6]2+ ‚the magnetic moment is 3.87 BM. The configuration of the 3d-orbital is (a) t2g6‚eg1 (b) t2g5‚eg2 (c) t2g4‚eg3 (d) t2g3‚eg4 4. Which of the following aqueous solutions have the highest boliing point (Molar masses
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Topic Acid-Base Theory (Unit 1) Acid-Base Theory (Unit 2) Isomerism (Unit 1) Isomerism (Unit 2) Nomenclature Reaction Mechanism (Unit 1) - Introduction to Mechanism Reaction Mechanism (Unit 2) - Nucleophilic substitution Reaction Mechanism (Unit 3) - Nucleophilic substitution Reaction Mechanism (Unit 4) - Nucleophilic substitution Reaction Mechanism (Unit 5) - Nucleophilic substitution Reaction Mechanism (Unit 6) - Nucleophilic substitution Reaction Mechanism (Unit 7) - Elimination Reaction Mechanism
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HYDROCARBONS 365 UNIT 13 HYDROCARBONS Hydrocarbons are the important sources of energy. After studying this unit‚ you will be able to • • name hydrocarbons according to IUPAC system of nomenclature; recognise and write structures of isomers of alkanes‚ alkenes‚ alkynes and aromatic hydrocarbons; learn about various methods of preparation of hydrocarbons; distinguish between alkanes‚ alkenes‚ alkynes and aromatic hydrocarbons on the basis of physical and chemical properties; draw and
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ester linkages) produced the following fatty acids. Structure I CH3(CH2)4CH=CHCH2CH=CH(CH2)7COOH Structure II CH3CH2CH=CHCH2CH=CHCH2CH=CH(CH2)7COOH (i) In an experiment‚ hot acidified potassium manganate(VII) was used to oxidise Structure I. Write the structural formulae of all organic products formed during the oxidation. (ii) What is meant by the term cis-trans isomerism? How many cis-trans isomers are present in Structure I? Draw any 2 possible cis-trans isomers. (iii) State
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Changes in temperature or pressure cannot affect the rate of decay (disintegration) of radioactive elements. F Decay constant maintains its constancy only at the specific temperature. How much energy is lost or gained when a mole of cobalt-60 undergoes beta decay: 6027Co --> 6028Ni + 0-1e ? The mass of the 6027Co atom is 59.933819 amu‚ and that of a 6028Ni atom is 59.930788 amu. Answer Here? 2.724x1011 J energy is released. 2.724x1011 J energy is absorbed.
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York‚ 1993. (2.) J (3.) J. H. Day‚ Chemical Reviews‚ 63‚ (1963) 65. (4.) J (5.) J. H. Day‚ "Kirk-Othmer ’s Encyclopedia of Chemical Technology‚" Vol.6‚ Wiley-Interscience‚ New York‚ 1979‚ p.129. (6.) C (7.) R. Foster‚ "Organic Charge-Transfer Complexes‚" Academic Press‚ London‚ 1969. (8.) H (9.) R. C. Teitelbaum et al.‚ Journal of American Chemical Society‚ 100 (1978) 3215 (10.) C (11.) J. G. Hughes‚ Journal of Chemical Education‚ 75 (1998) 57. (12.) K (13.) K. Nassau‚ "The Physics and Chemistry
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Synthesis Procedure 1 -1.0 Introduction A Cobalt-Amine-Halide compound is synthesized from cobalt (II) chloride hexahydrate. An orange-tinted solid is produced and is considered to be unknown since the specific ligand amounts are unknown. By determining the percent composition of various elements and compounds in the unknown‚ its true identity can be predicted. Chloride‚ ammonia‚ and cobalt are three examples of percent compositions determined to help narrow the selection of possible unknowns
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should be as follows (and numbered accordingly): Title Page 1.0 Introduction 2.0 Synthesis of a Cobalt Complex 3.0 Percent Halide Analysis of Cobalt Complex 4.0 Preparation and Standardization of a 0.3 M Hydrochloric Acid solution 5.0 Percent Ammonia Analysis of Cobalt Complex 6.0 Preparation and Standardization of a 0.1 M Sodium Thiosulfate solution 7.0 Percent Cobalt Analysis of Cobalt Complex 8.0 Discussion and Conclusions Title Page Title (centered) Name Date CHEM 1212K Class
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affect of temperature & concentration changes on systems in equilibrium II. Safety Wear apron Wear goggles Do not spill chemicals Clean up after use Wash hands Chemicals are TOXIC (by Britney Spears) III. Procedure A. Iron-thiocyanate equilibrium Pipet .3mL of 1 M iron (III) nitrate and .3 mL of 1 M ammonium thiocyanate. into clean 250 mL beaker. Add 75 mL of DS water. Mix well. Divide the solution into equal portions into four 6 inch test tubes. Number the test tubes (1-4). To tube
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