When the alkanes are burned with sufficient air, the compounds formed are
CO 2 and H 2 O. An example is:
2C 2 H 6 (g) + 7O 2 (g) → 4CO 2 (g) + 6H 2 O(g)The alkanes can be reacted with halogens so that hydrogens are replaced by
a halogen atom: These are called alkyl halides.
Some common substitution compounds of methane are: