Răspuns :
C-C-C-C-C --(>650°C)=> C=C-C-C-C
1-pentena
C-C=C-C-C
2-pentena
C-C-C-C- --(<650°C)=> C=C-C-C + CH4
1-butena
C-C=C-C + CH4
2-butena
C-C-C-C-C => C=C-C + C-C
propena etan
C-C-C-C-C => C=C + C-C-C
etena propan
C-C-C-C-C --(>650°C)=> C=C-C-C-C
1-pentena
C-C=C-C-C
2-pentena
C-C-C-C- --(<650°C)=> C=C-C-C + CH4
1-butena
C-C=C-C + CH4
2-butena
C-C-C-C-C => C=C-C + C-C
propena etan
C-C-C-C-C => C=C + C-C-C
etena propan