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AIIMS2008ChemistryElectrochemistry

For the following concentration cell, to be spontaneous ( Pt ( H ₂ ) P₁ ) atm. (| HCl | Pt ( H ₂ ) P₂ ) atm. Which of the following is correct?

Options

  1. A(P₁=P₂ )
  2. B(P₁ < P₂ )
  3. C(P₁>P₂ )
  4. DCan't be predicted

Correct answer

C. (P₁>P₂ )

Step-by-step solution

Pt ( H ₂ ) P ₁ atm. | HCl | Pt ( H ₂ ) P ₂ atm. For spontaneous reaction, E_ cell should be positive so P₁>P₂E_ cell = 0.059 2 P₁ P₂ Also, if P₁>P₂ oxidation occurs at L.H.S. electrode and reduction occurs at R.H.S. electrode.

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