What is the product formed when CH3CH2OH reacts with O2?

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SSC CGL 2023 Tier-I Official Paper (Held On: 17 Jul 2023 Shift 2)
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  1. H2O + heat
  2. CO2 + H2O + heat and light
  3. CO2 + H2O + light
  4. CO2 + heat and light

Answer (Detailed Solution Below)

Option 2 : CO2 + H2O + heat and light
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Detailed Solution

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The correct answer is CO2 + H2O + heat and light.Key Points

  • When ethanol (CH3CH2OH) undergoes complete combustion with oxygen (O2), the products formed are carbon dioxide (CO2), water (H2O), heat and light.
  • This reaction is an example of rapid oxidation, where a substance reacts with oxygen to release energy in the form of heat and light.
  • The balanced chemical equation is:
  • CH3CH2OH + 3O2 \(\rightarrow\) 2CO2 + 3H2O + heat and light
  • Remember, sufficient oxygen should be present for complete combustion to occur.
  • In a limited supply of oxygen, incomplete combustion will occur, leading to the formation of carbon monoxide (CO) and water.
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