ch2=c(ch3)-c(ch3)=ch2
ch2=ch-c(ch3)(ch3)-ch3
ch3-ch(ch3)-ch2-ch2-ch3
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c3h8 + 5O2 -> 3co2 + 4h2o
c3h8->(под действием температуры t, платины Pt) c3h6 + h2
c3h6 + hbr -> c3h7br
c3h7br + br2 ->(на свету(hv)) c3h6br + hbr
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ch2=ch-ch=ch-ch3 + hcl -> ch3-ch=ch-chcl-ch3
n(ch2=ch-ch3)-> (-ch2-ch(ch3)-)n