The combustion of ethanol, C2H5OH(l), in oxygen to form carbon dioxide gas and water vapor is shown by which balanced chemical equation?

AC2H5OH(l) + O2(g) → CO2(g) + H2O(g)
BC2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(g)
C2CO2(g) + 3O2(g) → C2H5OH(l) + 3H2O(g)
D2CO2(g) + 3H2O(g) → C2H5OH(l) + 3O2(g)

The combustion of ethanol, C2H5OH(l), in oxygen to form carbon dioxide gas and water vapor is shown by this balanced chemical equation: B) \(C_2H_5OH_{(l)} + 3O_2_{(g)}\) -----> \(2CO_2_{(g)} + 3H_2O_{(g)}\)

In Chemistry, a chemical equation is typically used to denote or represent the chemical reaction between two or more chemical elements.

A balanced chemical equation can be defined as a chemical equation wherein the number of atoms on the reactant (left) side is equal to the number of atoms on the product (right) side.

From the question, we know that the reactants undergoing combustion are ethanol and oxygen while the products are carbon dioxide gas and water vapor.

Ideally, the first step in balancing a chemical equation is to count the number of atoms in the reactant and product side.

\(C_2H_5OH_{(l)} + 3O_2_{(g)}\) -----> \(2CO_2_{(g)} + 3H_2O_{(g)}\)

For reactants:

Carbon = 2 atoms.

Hydrogen = 6 atoms.

Oxygen = 1 + 6 = 7 atoms.

For products:

Carbon = 2 atoms.

Hydrogen = 6 atoms.

Oxygen = 4 + 3 = 7 atoms.

Since, the number of atoms on the reactant (left) side is equal to the number of atoms on the product (right) side, it is a balanced chemical reaction (equation).

In conclusion, we can deduce that the above chemical equation is balanced based on the above data.

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