Considering the reaction stoichiometry, 2.5 moles of O₂ are required to react completely with 1 mole of acetylene C₂H₂.
<h3>Reaction stoichiometry</h3>
The balanced reaction is:
2 C₂H₂ + 5 O₂ → 4 CO₂ + 2 H₂O
By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:
- C₂H₂: 2 moles
- O₂: 5 moles
- CO₂: 4 moles
- H₂O: 2 moles
<h3>Moles of oxygen O₂ required</h3>
Then you can apply the following rule of three: if by stoichiometry of the reaction 2 moles of C₂H₂ react with 5 moles of O₂, 1 mole of C₂H₂ reacts with how many moles of O₂?
<u><em>amount of moles of O₂= 2.5 moles</em></u>
Finally, 2.5 moles of O₂ are required to react completely with 1 mole of acetylene C₂H₂.
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