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NEETChemistryGeneral Principles and Processes of Isolation of Metals

At what temperature and pressure is the process of digestion carried out during the extraction of Al 2 O 3 from bauxite using NaOH?

Options

  1. A523 K and 40 bar pressure
  2. B473 K and 35–36 bar pressure
  3. C600 K and 30 bar pressure
  4. D500 K and 50 bar pressure

Correct answer

B. 473 K and 35–36 bar pressure

Step-by-step solution

The digestion process for extracting Al 2 O 3 from bauxite using NaOH occurs at temperatures ranging from 473 to 523 K and 35 to 36 bar pressure.

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