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Question

Write the balanced chemical equation for the below reaction and identify the type of reaction in this case:

Thermite reaction- Iron (III) oxide reacts with Aluminum to give molten iron and aluminum oxide.


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Solution

Chemical reaction:

  • A chemical reaction is a process by which one or more chemical substances known as reactants form a new chemical compound known as products.

Balanced chemical reaction:

  • A balanced reaction involves an equal number of atoms for each element on the reactant and product side.

Thermite reaction:

  • The thermite reaction is an exothermic reaction where Iron (III) oxide reacts with Aluminum to give molten Iron and Aluminum oxide.
  • Iron is denoted as Fe (for ferrous) which is derived from Latin ‘Ferrum’.
  • Aluminum (Al) reacts with oxygen to form Aluminum oxide Al2O3
  • The reaction can be written as
  • Fe2O3(s)+Al(s)Fe(s)+Al2O3(s)+heatIron(III)oxideAluminumIronAluminumoxide

Type of reaction:

  • This reaction is an example of a single displacement reaction.

Displacement reaction:

  • A displacement reaction is one where a more reactive metal displaces a low reactive metal with the release of energy.
  • In the above reaction, Aluminum being a more reactive metal displaces a lesser reactive metal which is Iron in Iron (III) oxide to form Aluminum oxide.

Thus, thermite reaction is a type of Single-displacement reaction.


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