Combustion and Chemical Reaction Quiz
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Questions and Answers

What is combustion?

  • A process that does not produce gaseous products
  • A reaction that does not involve oxygen
  • A low-temperature endothermic reaction between a fuel and an oxidant
  • A high-temperature exothermic redox chemical reaction between a fuel and an oxidant (correct)

    • What is the purpose of activation energy in combustion?

  • To reduce the temperature of the reaction
  • To produce smoke
  • To extinguish the flame
  • To initiate the combustion process (correct)

    • What happens during the combustion of solid fuels like wood and coal?

  • They absorb heat from the surroundings
  • They release water vapor as a byproduct
  • They do not produce any gaseous byproducts
  • They undergo endothermic pyrolysis to produce gaseous fuels (correct)

    • What is the characteristic indicator of the combustion reaction?

    <p>A flame</p> Signup and view all the answers

    What is the heat released when hydrogen and oxygen combust to form water vapor?

    <p>242 kJ/mol</p> Signup and view all the answers

    What is the characteristic indicator of the combustion reaction?

    <p>Flame</p> Signup and view all the answers

    What is the purpose of activation energy in combustion?

    <p>To initiate the combustion reaction</p> Signup and view all the answers

    What happens during the combustion of solid fuels like wood and coal?

    <p>Endothermic pyrolysis to produce gaseous fuels</p> Signup and view all the answers

    What is the heat released when hydrogen and oxygen combust to form water vapor?

    <p>242 kJ/mol</p> Signup and view all the answers

    What is required for uncatalyzed combustion in air?

    <p>Relatively high temperatures</p> Signup and view all the answers

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