As a rule of thumb, the boiling point rises 20–30 °C for each carbon added to the chain; this rule applies to other homologous series.
æz ɐ ɹˈuːl ʌv θˈʌm, ðə bˈɔɪlɪŋ pˈɔɪnt ɹˈaɪzᵻz twˈɛnti θˈɜːɾi dᵻɡɹˈiːz sˈiː fɔːɹ ˈiːtʃ kˈɑːɹbən ˈædᵻd tə ðə tʃˈeɪn; ðɪs ɹˈuːl ɐplˈaɪz tʊ ˈʌðɚ həmˈɑːləɡəs sˈɪɹiz.