(Reacts with alkanes) Reagent: Br2 in H2O Observation: decolorization‚ brown ( colorless Procedure: 2 drops of test compound in test tube+ 1 drop 0.05 M Br2 in H2O‚ shake well‚ record observations Bromination in Dark (Electrophilic Addition Halogenation) (Reacts with alkenes) Reagent: Br2 in H2O Observation: decolorization‚ brown ( colorless Procedure: 2 drops of test compound
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4th form Chemistry questionnaire 1. All of the following structures show the same molecule‚ except one. Which structure is different? H H H H A) H -- C -- C -- C --- C -- H B) CH3 CH2 CH2 CH3 H H H H H H -- C -- H CH3 C) H H D)
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Objectives After studying this Unit‚ you will be able to • name haloalkanes and haloarenes according to the IUPAC system of nomenclature from their given structures; • describe the reactions involved in the preparation of haloalkanes and haloarenes and understand various reactions that they undergo; • correlate the structures of haloalkanes and haloarenes with various types of reactions; • use stereochemistry as a tool for understanding the reaction mechanism; • appreciate the applications of organo-metallic
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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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dihalide has two halogens on the same carbon. A vicinal dihalide has halogens on adjacent carbon atoms. Br Br R R R gem-dibromide Cl Cl R R R vicinal dichloride Preparation of Alkyl Halides Numerous ways to make alkyl halides. (1a) Free Radical Halogenation Usually this method
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Methane From Wikipedia‚ the free encyclopedia Methane IUPAC name[hide] Methane[1] (substitutive) Tetrahydridocarbon[1] (additive) Identifiers CAS number 74-82-8 PubChem 297 ChemSpider 291 EC number 200-812-7 UN number 1971 KEGG C01438 MeSH Methane ChEBI CHEBI:16183 ChEMBL CHEMBL17564 RTECS number PA1490000 Beilstein Reference 1718732 Gmelin Reference 59 3DMet B01450 Jmol-3D images Image 1 SMILES [show] InChI [show] Properties Molecular formula CH4 Molar mass 16
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ONE-SCHOOL.NET Short Notes: Form 5 Chemistry Rate or Reaction Calculation Rate of Reaction (Average Rate) Rates of reaction = Quantity change of reactants/products Total time for the reaction If the quantity change is immeasurable Rates of reaction = 1 Total time for the reaction Find the Rate From a Graph Average Rate Rates At an Instant The rate of reaction is equal to the slope of the graph The rate of reaction at an instant‚ t‚ is equal to the of quantity against
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alternating (conjugated) double bonds b) Resistance to Addition Reactions – - although benzene has double bonds‚ it does not undergo typical alkene reactions such as electrophilic addition - benzene is‚ in fact‚ very stable towards hydrogenation‚ halogenation‚ hydration & addition of hydrogen halides: NR EX. H2 X2 C6H6 H2 O HX NR NR NR c) Preference for Substitution Reactions – - instead of addition reactions like alkenes‚ benzene readily undergoes substitution reactions typical of alkanes:
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SYLLABUS FOR ENTRANCE TEST 2012 UNIVERSITY OF HEALTH SCIENCES LAHORE‚ PAKISTAN STRUCTURE OF ENTRANCE TEST PAPER 2012 Sr.# Subject No. of Questions 1. PHYSICS 44 2. CHEMISTRY 58 3. ENGLISH 30 4. BIOLOGY 88 TOTAL 220 CONTENTS PHYSICS Syllabus TOS Self Test Questions CHEMISTRY Syllabus TOS Self Test Questions ENGLISH Syllabus Self Test Questions BIOLOGY Syllabus TOS Self Test Questions PAGE# 1-5 6 7-9 10-21 22 23-28 29-34 35-36 37-44 45 46-51 PHYSICS
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Chemistry Exam Study Sheet Organic Chemistry • Study of compounds to which carbon is the principal element. • Carbon is special because it has 4 bonds. Functional Groups • Organic substances are organized into organic families. • Organic Families – group of organic compounds with common structural features. o Each family has a recognizable physical property and a specific structural arrangement. o Each combination is referred to as a functional group. o Even
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