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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3ec098

Consider the cell at 298 K. Take and . Which statements are correct?

  1. AThe cell EMF is
  2. BThe right hand electrode is the cathode
  3. C is about per mole of transferred from the 0.1 M side to the 0.01 M side
  4. DThe EMF becomes if the pressure on both sides is raised to 2 bar

Answer: A, B, C

Reduction is favoured where is higher, so the 0.1 M side (right) is the cathode (B). (A); using with gives the same value. Net change per electron is , so (C). Hydrogen pressure cancels when it is equal on both sides, so (D) is wrong.
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