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COMEDK2018ChemistryElectrochemistry

Which one of the following condition will increase the voltage of the cell represented by the equation. Cu (s)+2 Ag ⁺(a q) Cu ²⁺(a q)+2 Ag (s)

Options

  1. Aincrease in the dimensions of Cu electrode
  2. Bincrease in the dimensions of Ag electrode
  3. Cincrease in the concentration of Cu ²⁺ ions
  4. Dincrease in the concentration of Ag ⁺ ions

Correct answer

D. increase in the concentration of Ag ⁺ ions

Step-by-step solution

According to Nernst equation, E_ cell =E_ cell ^ - 0.0591 n [ Cu ⁺² ] [ Ag ⁺ ]² The voltage of cell will increase with increase in concentration of Ag ⁺ ions.

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