The answer is 1 2 and 3, all are correct, but i need reasons. I understand 1, but not 2 and 3
As X stands for a halogen, Cl for instance, so HX is HCl. This type of reaction is Dehydrohalogenation: one H- and the Cl-Atom in the halogenalkane are ruptured, formed to HCl and an alkene is left.
The answer is 1 2 and 3, all are correct, but i need reasons. I understand 1, but not 2 and 3
Or is it about the isomers? structural isomers in alkenes exists, if the double bound is on a different C-atom, geometric isomer in turn, if the alkene has CH3-branches on a different C-atom (E-Z-isomers!).