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Electrochemistry question

2019 · 11 Jan · Shift 1 · Q5
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  5. /2019 · 11 Jan · Shift 1 · Q5

Electrochemistry question

2019 · 11 Jan · Shift 1 · Q5

JEE MainChemistryElectrochemistryMCQ+4 / −1
For the cell Zn(s) |Zn2+ (aq)| |Mx+ (aq)| M(s), different half cells and their standard electrode potentials are given below :

Mx+ (aq)/M(s) Au3+(aq)/Au(s) Ag+(aq)/Ag(s) Fe3+(aq)/Fe2+ (aq) Fe2+(aq)/Fe(s)
E0Mx+/M/(V) 1.40 0.80 0.77 −-− 0.44


If Ezn2+/zn0E_{z{n^{2 + }}/zn}^0Ezn2+/zn0​=−-− 0.76 V, which cathode will give maximum value of Eocell per electron transferred?
  1. A
    Ag+Ag^+Ag+/Ag
  2. B
    Fe3+Fe^{3+}Fe3+/Fe2+Fe^{2+}Fe2+
  3. C
    Au3+Au^{3+}Au3+/Au
  4. D
    Fe2+Fe^{2+}Fe2+/Fe
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