clorura in prezenta de CCl4 = aditie
scriem reactia genereal de aditie..
CnH2n + Cl2 --CCl4--> CnH2nCl2
14n ................................. 14n+71
100% ............................. 100+126,71
=> n = 4, butena
1-butena
2-butena cis+trans
2-metilpropena
=> 4 izomeri
=> A)
