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Definition & Naming. Heuristics (Mnemonics). General & Structural Formula. Physical & Chemical Properties. Alkanes & Alkenes. ALKANES & ALKENES. Definition of HOMOLOGOUS SERIES. A group of organic compounds with the SAME general formula, in which one member differ from the next
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Definition & Naming Heuristics (Mnemonics) General & Structural Formula Physical & Chemical Properties Alkanes & Alkenes ALKANES & ALKENES
Definition of HOMOLOGOUS SERIES A groupof organic compounds with the SAME general formula, in which one member differ from the next by a –CH2group.
Mummy Happily Eats Peanut Butter Pancake Diagrammatic representation
Guiding principles when drawing structural formula,
Naming of Alkanes General Formula : CnH2n+2 CH4 1 Methane C2H6 2 Ethane C3H8 3 Propane
Naming of Alkanes C4H10 4 Butane C5H12 5 Pentane C6H14 6 Hexane
Naming of Alkenes General Formula : CnH2n 1 C2H4 2 Ethene C3H6 3 Propene
Naming of Alkenes C4H8 4 Butane C5H10 5 Pentane C6H12 6 Hexane
Physical Properties for straight-chain alkanes Boiling pt as the number of carbon atoms . Boiling point Number of carbon atoms
Chemical Properties for straight-chain alkanes Generally unreactive except with oxygen. Alkane + oxygen carbon dioxide + water C2H6 + O2 2CO2 + 3H2O
Chemical Properties for straight-chain alkenes Reaction with oxygen. Alkene + oxygen carbon dioxide + water C2H4 + 3O2 2CO2 + 2H2O Reaction with hydrogen. Alkene + hydrogen Alkane C2H4 + H2 C2H6
Chemical Properties for straight-chain alkenes Reaction with steam. Alkene + steam Alcohol C2H4 + H2O C2H5OH Phosphoric (V) acid catalyst Reaction with bromine. Alkene + bromine 1,2-dibromoalkane C2H4 + Br2 C2H4Br2 colourless orange-red