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Standard potential of one electrode from the standard emf of the cell and the other electrode

The same question, asked 4 times: 16 May 2023 S1*, 15 Apr 2026 S2*, 17 Apr 2026 S1*, 13 May 2026 S1. Every wording below, oldest first.

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  1. Question 1

    16 May 2023 S1

    82
    Consider the following cell: Zn(s)∣Zn(1M)2+∣∣KCl(sat)∣Hg2Cl2∣Hg\text{Zn}_{(s)}|\text{Zn}^{2+}_{(1M)}||\text{KCl}_{(sat)}|\text{Hg}_2\text{Cl}_2|\text{Hg}. E°cell=1.007 VE°_{\text{cell}} = 1.007\,\text{V} and E°calomel=0.242 VE°_{\text{calomel}} = 0.242\,\text{V}. What is the standard potential of Zn?

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  2. Question 2

    15 Apr 2026 S2

    25
    The Ecell0E^0_{\text{cell}} of Al(s)∣Al3+(1M)∣∣Pb2+(1M)∣Pb(s)\mathrm{Al_{(s)}|Al^{3+}(1M)||Pb^{2+}(1M)|Pb_{(s)}} cell is 1.5 V if EPb0E^0_{\text{Pb}} is −0.14-0.14 V then EAl0E^0_{\text{Al}} will be

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  3. Question 3

    17 Apr 2026 S1

    24
    If the emf of cell, Cu(s) ∣ Cu(1M)2+ ∣∣ Ag(1M)+ ∣ Ag\mathrm{Cu_{(s)}\,|\,Cu^{2+}_{(1M)}\,||\,Ag^+_{(1M)}\,|\,Ag} is 0.463 V at 25 ∘C25\ ^\circ\mathrm{C} and standard potential of Cu electrode is 0.337 V. Find the standard potential of Ag electrode

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  4. Question 4

    13 May 2026 S1

    24
    The standard EMF of the cell, Ni | Ni2+\mathrm{Ni^{2+}} || Cu2+\mathrm{Cu^{2+}} | Cu is 0.590.59 Volt. The standard reduction potential of a copper electrode is 0.340.34 volt. What is the standard electrode potential of nickel electrode ?

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