The balanced equation for the combustion of ethanol (C₂H₆O) in pure oxygen is
C₂H₆O + 3O₂ —> 3H₂O + 2CO₂ (Option E)
What is a chemical equation?
Chemical equations are representations of chemical reactions using symbols and formula of the reactants and products.
The reactants are located on the left side while the products are located on the right side.
Reactants —> Products
The balancing of chemical equations follows the law of conservation of matter which states that matter can neither be created nor destroyed during a chemical reaction but can be transferred from one form to another.
How to write and balanced the equation
C₂H₆O + O₂ —> H₂O + CO₂
There are 2 atoms of C on the left side and 1 on the right. It can be balance by writing 2 before CO₂ as shown below
C₂H₆O + O₂ —> H₂O + 2CO₂
There are 6 atoms of H on the left and 2 on the right. It can be balance by writing 3 before H₂O as shown below
C₂H₆O + O₂ —> 3H₂O + 2CO₂
There are a total of 3 atoms of O on the left and a total of 7 on the right. It can be balance by writing 3 before O₂ as shown below
C₂H₆O + 3O₂ —> 3H₂O + 2CO₂
Now, the equation is balanced
The correct answer to the question is:
C₂H₆O + 3O₂ —> 3H₂O + 2CO₂ (Option E)
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