JEE Main202229 Jul 2022Evening ShiftChemistryElectrochemistryActual
For a cell, Cu s Cu 2 + 0 . 001 M ) Ag + 0 . 01 M Ag s the cell potential is found to be 0 . 43 V at 298 K . The magnitude of standard electrode potential for Cu 2 + | Cu is____ × 10 - 2 V Given : E Ag + / Ag Θ = 0 . 80 V and 2 . 303 RT F = 0 . 06 V
Correct answer
0
Step-by-step solution
At anode Cu → Cu 2 + + 2 e - At cathode 2 Ag + + 2 e - → 2 Ag Cell reaction → Cu + 2 Ag + → Cu 2 + + 2 Ag E cell = E cell 0 - 0 . 06 2 log Cu 2 + Ag + 2 0 . 43 = E cell 0 - 0 . 06 2 log 0 . 001 0 . 01 2 E cell 0 = 0 . 46 E cell 0 = E Ag + / Ag 0 - E Cu 2 + / Cu 0 0 . 46 = 0 . 80 - E Cu 2 + / Cu 0 E Cu 2 + / Cu 0 = 0 . 34 volt E Cu 2 + / Cu 0 = 34 × 10 - 2