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JEE Main202117 Mar 2021Morning ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

The point of intersection and sudden increase in the slope, in the diagram given below, respectively, indicates:

Options

  1. AΔG = 0 and melting or boiling point of the metal oxide
  2. BΔG > 0 and decomposition of the metal oxide
  3. CΔG < 0 and decomposition of the metal oxide
  4. DΔG = 0 and reduction of the metal oxide

Correct answer

A. ΔG = 0 and melting or boiling point of the metal oxide

Step-by-step solution

At intersection point ΔG = 0 and sudden increase in slope is due to melting or boiling point of the metal.

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