School of Chemistry University of KwaZulu-Natal Westville Campus Chemistry 220 Organic Chemistry 2012 LABORATORY MANUAL It is a legal requirement that are worn in this room at all times. Sunglasses (normal or prescription) are NOT to be worn as a substitute for safety glasses. Prescription glasses (except sunglasses) are acceptable PROVIDED THEY COVER THE EYES COMPLETELY. Some types of contact lens should not be worn in the laboratory. Check with your lens supplier. All shoes MUST be
Free Solvent Acetic acid Chemistry
SYLLABUS CHEMISTRY (043) CLASS-XII – (2012-13) Annexure - ‘ I ’ S.No. 1. 2. 3. 4. Type of Question Long Answers (LA) Short Answers-II (SA II) Short Answers-I (SA-I) Very Short Answer (VSA) Total Marks for No. of Total Marks each Question Questions 5 3 2 1 3 9 10 08 30 15 27 20 08 70 Weightage 4 5 5 5 4 3 8 5 3 4 4 6 4 4 3 3 70 Total: S.No. UNIT 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. Solid State Solutions Electrochemistry Chemical Kinetics Surface Chemistry General Principles
Premium Chemistry Chemical reaction Reaction rate
Toxicol. 2008‚ 21‚ 53-69 2) Chemical Basis for the Extreme Skin sensitization Potency of (E)-4-(Ethoxymethylene)-2-phenyloxazol-5-(4H)-one. Chem. Res. Toxicol. 2010‚ 23‚ 1913-1920 3) Chemical Reactivity and Skin Sensitization Potential for Benzaldehydes: Can Schiff Base Formation Explain Everything? Chem. Res. Toxicol. 2012‚ 25‚ 2203-2215 4) Mechanistic Applicability Domains for Non-Animal Based Prediction of Toxicological Endpoints. QSAR Analysis of the Schiff Base Applicability Domain for Skin
Premium Chemistry Immune system Chemical compound
6‚8-dibromo-2-(4-chlorophenyl)quinazolin-4-amine (IV) A mixture of chloro compound III ( 0.01 mol) and ammonium acetate (2.3 g‚ 0.3 mol) in pyridine was refluxed for 20 h. The reaction mixture was cooled and then poured onto crushed ice. The obtained solid was filtered off and recrystallized from ethanol. m.p. 270oC ‚ 75% yield. Analysis calculated for C14H8Br2ClN3; Calcd.: %C‚ C‚ 40.67; H‚ 1.95; N‚ 10.16‚ Found: % C 40.70; H‚ 1.99; N‚10.10. IR: υmax./cm-1 3250‚ 3140 (NH2)‚ 3010 (C-H aromatic)
Premium Water Chemistry Chemical reaction
by : Directorate of Education‚ Delhi SOME IMPORTANT REASONING BASED QUESTIONS OF ORGANIC CHEMISTRY 1. Chlorobenzene is less reactive than chloromethane. Ans. In chlorobenzene‚ each carbon atom of benzenering is sp2 hyridised and is electron withdrawing. Chlorine atom donates a lone pair of electron and acquire positive charge. The negative charge is delocalised on ortho and para position by resonance. C-Cl bond acquires partial double bond character and is 169 pm as compared to 17.0 pm in chloromethane
Premium Alcohol Carboxylic acid Oxygen
natural laxative‚ aid digestion‚ help to relieve the symptoms of pre-menstrual syndrome (PMS)‚ help to fight cancer and the juice kills roundworms and bacteria Japanese scientists have isolated an anti-cancer chemical contained in figs called ‘benzaldehyde’‚ which is used to treat advanced cancer patients. Other researchers have isolated enzymes known as ‘ficins’ in figs‚ which aids digestion. The high fibre in figs makes them a perfect natural laxative. Fibre also makes you feel full‚ so eating
Premium Nutrition Dietary fiber Hypertension
1 HIGHER SECONDARY MODEL EXAMINATION HSE II Max.marks: 60 CHEMISTRY Time: 2.45 hrs General instructions All questions are compulsory Cool-off time is 15 minutes 1] Defects modify the properties of crystals [4 marks] A] Give differences between Schottky and Frenkel defects [2.0] B] On heating zinc oxide becomes yellow in colour. Why? [1.0 ] C] Alkali metal halides on heating in presence of alkali metal produce characteristic colours.Give reason [1.0] 2] Colligative
Premium Reaction rate Chemistry Chemical reaction
Organic chemistry studies carbon compounds‚ but a few carbon compounds such as carbon monoxide‚ carbon dioxide‚ metal carbonates‚ and carbon disulphide traditionally come under the umbrella of inorganic chemistry. INTRODUCTORY 1. Give the following for the compound propane C3H8: (a) Full structural formula (b) Skeletal formula 2. Draw all the possible isomers of hexane C6H14 and give the name of each. 3. Draw the structural formulae for each of the following alkanes: (a) 2‚2- dimethylbutane
Premium Alcohol Carboxylic acid Organic chemistry
know the elements of life – and how the reduction and oxidative of some of these drive bioenergetics oxidize carbon (i.e. glucose source) and reduce oxygen (electron acceptor) (CHNOPS) and iron (Fe; trace element; Fe also important to obtain cellular energy). Nutrition: CHNOPS Trace Elements: Iron (Fe)‚ Ni‚ Mg‚ Mo‚ Mn‚ Ca (important in humans due to osteoblastic activity)‚ Co Occupancy: beat out others for a spot to live‚ e.g. microbiota (normal flora) Resistance: defend against microbes‚ eukaryotes
Premium Cellular respiration Bacteria Adenosine triphosphate
3090 3090▌ SHORT REVIEW Reaction of Diazo Compounds with Organoboron Compounds short review Huan Li‚ Yan Zhang‚ Jianbo Wang* Reaction of Diazo Compounds with Organoboron Compounds Abstract: The transition-metal-free reactions of diazo compounds with organoboron compounds are reviewed. This type of reaction provides an alternative approach for the formation of C–C‚ C–B‚ and C–Si bonds. Moreover‚ by using tosylhydrazones as diazo compound precursors and boronic acids/esters as the
Premium Functional groups Organic chemistry