Do I need to use the empirical formula of hydrocarbon,CH2 or the molecular formula C5H10 or either one will do??
Given enough oxygen, hydrocarbons will completely combust to release water and carbon dioxide as products:
Example: C2H4 + 3O2 ------> 2H2O + 2CO2
The reaction is called combustion.
you need the molecular formula
the equation goes as follows:
C5H10 + 7.5O2 ----> 5CO2 + 5H2O (x2)
2C5H10 + 15O2 ---> 10CO2 + 10H2O
When hydrocarbons burn in excess O2 - blue flame
else yellow flame and carbon monoxide (CO) is formed