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JEE Main20207 Jan 2020Morning ShiftChemistryElectrochemistryActual

Given that the standard potentials E o of Cu 2 + / Cu and Cu + / Cu are 0.34 V and 0.522 V respectively, the E o of Cu 2 + / Cu + is:

Options

  1. A0.182 V
  2. B+ 0.158 V
  3. C- 0.182 V
  4. D- 0.158 V

Correct answer

B. + 0.158 V

Step-by-step solution

2 × 0.34 = E 1 o + 1 × 0.522 E 1 o = 0.68 - 0.522 E 1 o = 0.158

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