Question

What is the coefficient of H2O when the following equation is properly balanced with the smallest set of whole numbers? ____C2H5OH(l) + ____O2(g) → ____CO2(g) + ____H2O(l)

Answer 1

3

Step-by-step explanation:

at first try balancing the carbon first. At first multiply 2 with CO2, that produces 2 carbon and 8 oxygen. On reactant side we have 3 Oxygen. Now look at Hydrogen. There are 6 hydrogen atoms on the reactant side. So you need to multiply 3 with H20 to be 6 hydrogen atoms as 3*2 = 6.

Final reaction: C2H5OH + 3O2 ------> 2CO2 + 3H2O