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MHT CET20242 May 2024Morning ShiftChemistryElectrochemistryActual

Which from following expressions is used to calculate E _ cell for the following cell at 25^ C ? Pb _ ( s ) | Pb _ ( IM ) ⁺⁺ | | Ag _ (10 M ) ⁺ | Ag _ ( s )

Options

  1. AE _ cell = ( E _ cell ^ +0.0592 ) V
  2. BE _ cell = ( E _ cell ^ -0.0592 ) V
  3. CE_ cell = (E_ cell ^ -0.0296 ) V
  4. DE _ cell = ( E _ cell ^ +0.0296 ) V

Correct answer

A. E _ cell = ( E _ cell ^ +0.0592 ) V

Step-by-step solution

Pb _ ( s ) | Pb _ (1 M ) ⁺⁺ | | Ag _ (10 M ) ⁺ | Ag _ ( s ) Reaction: Pb _ ( s ) +2 Ag _ (10 M ) ⁺ Pb _ (1 M ) ⁺⁺+2 Ag _ ( s ) Nernst equation at 25^ C : aligned & E _ cell = E _ cell ^ o - 0.0592 2 ₁₀ [ ~Pb ⁺⁺ ] [ Ag ⁺ ]^2 & E _ cell = E _ cell ^ o - 0.0592 2 ₁₀ 1 100 & E _ cell = E _ cell ^ o - 0.0592 2 ₁₀ 10⁻² & E _ cell = E _ cell ^ o - 0.0592 2 (-2) & E _ cell = ( E _ cell ^ o +0.0592 ) V aligned

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