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Manipal MET2010ChemistryRedox Reactions

Carbon cannot be used in the reduction of Al ₂ O ₃ because

Options

  1. Ait is an expensive proposition
  2. Bthe enthalpy of formation of CO ₂ is more than that of Al ₂ O ₃
  3. Cpure carbon is not easily available
  4. Dthe enthalpy of formation of Al ₂ O ₃ is too high

Correct answer

D. the enthalpy of formation of Al ₂ O ₃ is too high

Step-by-step solution

The enthalpy of formation of Al ₂ O ₃ is very high and hence, it is not possible to reduce it by carbon.

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