C2 H4+ 3O2= 2CO2+2H2O how many moles of methane will be burnt to produce 0.1 of water

0.05 mole of C₂H₄

Explanation:

Given parameters:

Number of moles of water = 0.1moles

Unknown:

Number of moles of methane = ?

Solution:

The reaction is simply a combustion reaction in which a fuel combines with oxygen to produce carbon dioxide, water and heat.

 The reaction equation:

           C₂H₄  + 3O₂  →   2CO₂  + 2H₂O

We solve this problem from the known to the unknown.

The unknown is C₂H₄ and the known is H₂O

       Now:

                     2 mole of H₂O is produced from 1 mole of C₂H₄

                     0.1 mole of H₂O is produced from  = 0.05 mole of C₂H₄

a is the correct answer