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04/10/2020 11:39 am
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Given that the standard reduction potentials for M+ /M and N+ /N electrodes at 298 K are 0.52 V and 0.25 V respectively. Which of the following is correct in respect of the following electrochemical cell?
M/M+ | | N+ /N
(a) The overall cell reaction is a spontaneous reaction.
(b) The standard EMF of the cell is -0.27 V.
(c) The standard EMF of the cell is 0.77 V.
(d) The standard EMF of the cell is -0.77 V.
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04/10/2020 11:44 am
(b) The standard EMF of the cell is -0.27 V.
Explanation:
E°cell = E°cathode - E°anode = E°right - E°left
E°cell = 0.25 - 0.52 = -0.27 V