Question

How does the law of conservation of mass apply to this reaction: C2H4 + O2 → H2O + CO2 ?

Answer 1

Explanation:

No because The atoms present on reactants and product side are not equal

Answer 2

Answer:

The law of conservation of mass states that in a system matter can neither be created or destroyed, hence atoms of each element on reactant side should equal atoms of each element on product side. In the unbalanced equation:

$c_{2}h_{4} + o_{2} = = > h_{2}o+ co_{2}$

the are 2 carbon atoms on reactant si

de as opposed to 1 carbon atom on product side,  there are 4 hydrogen atoms on reactant side as opposed to 2 hydrogen atoms on product side, andthere are 2 oxygen atoms on reactant side as opposed to 3 atoms of oxygen on product side. To balance the equation we add a coefficient of 3 on O_2 and on the product side we put a coefficient of 2 on both H20 water and carbon dioxide CO2

$c_{2}h_{4} + 3o_{2} = = >2 h_{2}o+2 co_{3}$

Hope it helps