Mass relationships in chemical reaction.Make a solution
For the combustion of ethane,beginning with 0.27 mole of CH3 CH3.
How many moles of O2 are required to completely consume the CH3 CH3?
The balanced equation for the combustion of ethane is:
2CH3CH3 + 7O2 → 4CO2 + 6H2O
This means that for every 2 moles of CH3CH3, we need 7 moles of O2.
Therefore, for 0.27 moles of CH3CH3, we need:
(7 mol O2/2 mol CH3CH3) x 0.27 mol CH3CH3 = 0.945 mol O2
So we need 0.945 moles of O2 to completely consume 0.27 moles of CH3CH3 in the combustion reaction.