alkenes and alkanes

• empirical formula is the simplest whole number ratio
• general formula for alkenes is Cn + H2n
• general formula for alkanes is Cn + H2n+2
• names for carbon number = 1 - meth, 2 - eth, 3 - prop, 4 - but, 5 - pent, 6 - hex
• endings = -ane if there is only single carbon bonds (c-c), its -ene if it has atleast one double bond (c=c)
• each member of a homologous series increases by CH2
• an alkane: general formula - Cn+H2n+2, has no double bonds - completely saturated
• an alkene: general formula - Cn+H2n, has at least one double bond - unsaturated
• alkane combustion?

  complete = CnH2n+2 + O2 ---> CO2 + H2O

  incomplete: CnH2n+2 + O2 ---> CO + H2O

  CnH2n+2 + O2 ---> C + H2O
• alkene combustion?


  complete = CnH2n + O2 ---> CO2 + H2O

  incomplete: CnH2n + O2 ---> CO + H2O

  CnH2n + O2 ---> C + H2O
• alkane is saturated because there are no double bonds
• alkenes are unsaturated because there is one or more double bond