2. Questions Bank
  3. JEE Main & Advanced
  4. Chemistry
  5. Electrochemistry / विद्युत् रसायन

JEE Main & Advanced Chemistry Electrochemistry / विद्युत् रसायन Question Bank Electrode potential Ecell Nernst equation and ECS

  • question_answer
    For the feasibility of a redox reaction in a cell, the e.m.f. should be          [J & K  2002]

    A)                 Positive  

    B)                 Fixed

    C)                 Zero      

    D)                 Negative

    Correct Answer: A

    Solution :

               Any redox reaction would occur spontaneously if the free energy change \[(\Delta G)\] is negative.                    \[\Delta {{G}^{o}}=nF{{E}^{o}}\]                                 Where \[n\] is the number of electrons involved, \[F\] is the value of Faraday and \[{{E}^{o}}\] is the cell emf. \[\Delta {{G}^{o}}\] can be negative if \[{{E}^{o}}\] is positive.


You need to login to perform this action.
You will be redirected in 3 sec spinner