Reactions With Alkanes
Alkane + Oxygen → CO2 + H2O
Little bit of heat to get it going and plenty of oxygen
2C4H10 + 13O2 → 8CO2 + 10H2O
Little bit of heat to get it going, and not enough O2.
** Oxygen is the limiting reactant!
2C4H10 + 9O2 → 8CO + 10H2O
2C4H10 + 5O2 → 8C + 10H2O
CO harmful to humans, unburned hydrocarbons produce smog
UV Light, hv
CH4 + Cl2 → CH3Cl → CH2Cl2 → CHCl3 → CCl4
(hv) (hv) (hv) (hv)
Methane + Cl2 → chloromethane →dichloromethane → chloroform (trichloromethane) → tetrachloromethane (carbontetrachloride)
Each electron from covalent bond goes to each atom forming free radical (unpaired electrons - very reactive)
The halogen molecule is broken in two identical free radical (atom with unpaired electron). The process is called homolytic fission.
Free radicals can react further with another alkane. No change in the number of free radicals.
Two free radicals collide and form a covalent bond. This step decreases the number of free radicals.