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NEETChemistryGeneral Principles and Processes of Isolation of Metals

Why does the reaction Cr 2 O 3 + 2Al → Al 2 O 3 + 2Cr, with ∆rG 0 = –421 kJ, not take place at room temperature even though it is thermodynamically feasible?

Options

  1. AThe activation energy barrier is too high.
  2. BThe reaction is kinetically inhibited.
  3. CThe reaction is not energetically favorable.
  4. DThe equilibrium constant is too low.

Correct answer

A. The activation energy barrier is too high.

Step-by-step solution

Correct Option is : (A) The activation energy barrier is too high.

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