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What will be the emf of the given cell Pt | H 2 (P 1 ) | H + (aq) | H 2 (P 2 ) | Pt ?

Options

  1. AR T F l n P 1 P 2
  2. BR T 2 F l n P 1 P 2
  3. CR T F   l n   P 2 P 1
  4. DNone of these

Correct answer

B. R T 2 F l n P 1 P 2

Step-by-step solution

P t | H 2 | H + | H 2 | P t Both the electrodes share the same [ H + ] . A : H 2 → 2 H + + 2 e − Applying Nernst equation E c e l l = 0 − R T 2 F l n P H 2 c P H 2 a = − R T 2 F l n P 2 P 1 = R T 2 F l n P 1 P 2

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