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Carbon Compounds. Alk anes. C n H 2n+2 Homologous Series Similar structure & properties Differ in number of CH 2 units Gradual change in physical properties i.e. Boiling point increases. Meth ane. methane CH 4. Eth ane. ethane C 2 H 6. Prop ane. propane C 3 H 8. But ane.
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Alkanes • CnH2n+2 • Homologous Series • Similar structure & properties • Differ in number of CH2 units • Gradual change in physical properties • i.e. Boiling point increases
Methane • methane CH4
Ethane • ethane C2H6
Propane • propane C3H8
Butane • butane C4H10
Mary Eats Peanut Butter • Methane one • Ethane two • Propane three • Butane four
The Rest of the Alkanes • pentane C5H12 • hexane C6H14 • heptane C7H16 • octane C8H18 • nonane C9H20 • decane C10H22
Structural Formula • Lewis Structures
Saturated Compounds • Organic compounds which have the maximum number of hydrogen atoms. • No double or triple bonds between carbon atoms.
Alkenes • Contain one or more double covalent bonds. • CnH2n
Methene • Does not exist…how could it?
Ethene • C2H4
Propene • C3H6
Butene • C4H8
Alkynes • Contain one or more triple covalent bonds. • CnH2n-2
Ethyne • C2H2
Cycloalkanes • CnH2n • Cyclopropane
Cyclohexane • C6H12
Ethanol • C2H5OH
Alcohols • CnH2n+1OH (ROH)
Methanol • CH3OH
Benzene • C6H6