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Potential of a single electrode at a given ion concentration by the Nernst equation

This type of question, asked 11 times: 21 Apr 2025 S1, 21 Apr 2025 S2, 22 Apr 2025 S1, 22 Apr 2025 S2, 25 Apr 2025 S1, 26 Apr 2025 S1, 26 Apr 2025 S2, 11 Apr 2026 S2, 20 Apr 2026 S2, 13 May 2026 S2, 15 May 2026 S1. All 11 questions below, oldest first.

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  1. Question 1

    21 Apr 2025 S1

    85
    If E∘(Mg+2 (aq)∣Mg(s))=−2⋅37 VE^{\circ}\left( Mg^{+ 2}\ _{(aq)}\mid Mg_{(s)} \right)= - 2 \cdot 37\text{ }V. What is potential for Mg(s)→Mg+2(0.1M)+2e−Mg_{(s)}\rightarrow Mg^{+ 2}(0.1M) + 2e^{-} at 298 K ?

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  2. Question 2

    21 Apr 2025 S2

    62
    If E∘(Ag+ (aq)∣Ag(s))=+0.80 VE^{\circ}\left( Ag^{+}\ _{(aq)}\mid Ag_{(s)} \right)= + 0.80\text{ }V What is potential developed for Ag(s)⟶Ag+1(0.01M)+e−Ag(s) \longrightarrow Ag^{+ 1}(0.01M) +e^{-}at 298 K ?

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  3. Question 3

    22 Apr 2025 S1

    100
    If E∘(Mg(aq)+2∣Mg(s))=−2.37 VE^{\circ}\left( Mg_{(aq)}^{+ 2}\mid Mg_{(s)} \right)= - 2.37\text{ }V. What is potential for Mg(s)⟶Mg+2(0.01M)+2e−Mg_{(s)}\longrightarrow Mg^{+ 2}(0.01M) + 2e^{-}at 298 K ?

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  4. Question 4

    22 Apr 2025 S2

    63
    If E∘(Al(aq)+3∣Al(s))=−1.66 VE^{\circ}\left( Al_{(aq)}^{+ 3}\mid Al_{(s)} \right)= - 1.66\text{ }V. What is potential of Al(s)⟶Al+3(0⋅1M)+3e−Al_{(s)}\longrightarrow Al^{+ 3}(0 \cdot 1M) + 3e^{-}at 298 K ?

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  5. Question 5

    25 Apr 2025 S1

    94
    If E∘(Zn(aq)+2∣Zn(s))=−0.76 VE^{\circ}\left( Zn_{(aq)}^{+ 2}\mid Zn_{(s)} \right)= - 0.76\text{ }V. Calculate potential for Zn(s)→Zn+2(0.01M)+2e−Zn_{(s)}\rightarrow Zn^{+ 2}(0.01M) + 2e^{-}at 298 K .

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  6. Question 6

    26 Apr 2025 S1

    99
    If E∘(Cu(aq)+2∣Cu(s))=+0.34 VE^{\circ}\left( Cu_{(aq)}^{+ 2}\mid Cu_{(s)} \right)= + 0.34\text{ }V. What is potential for Cu(s)→Cu(aq)+2(0.1M)+2e−Cu_{(s)}\rightarrow Cu_{(aq)}^{+ 2}(0.1M) + 2e^{-}at 298 K ?

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  7. Question 7

    26 Apr 2025 S2

    76
    What is reduction potential of hydrogen gas electrode when pure hydrogen gas is at 1 atmospheric pressure and platinum electrode is in contact with HCl solution of pH 1 at 298 K ?

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  8. Question 8

    11 Apr 2026 S2

    24
    The standard potential of Cu+2/Cu\mathrm{Cu^{+2}/Cu} is 0.340.34 V at 298298 K. Calculate its potential at the same temperature when the Cu+2\mathrm{Cu^{+2}} ion concentration is 0.10.1 M.

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  9. Question 9

    20 Apr 2026 S2

    25
    Determine the electrode potential of Sn2+(0.01M) ∣ Sn(s)\mathrm{Sn^{2+}(0.01M)\,|\,Sn(s)} at 25 ∘C25\ ^\circ\mathrm{C} if ESn∘E^\circ_{\mathrm{Sn}} is −0.136-0.136 V.

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  10. Question 10

    13 May 2026 S2

    28
    Calculate the electrode potential of Mg2+/Mg\mathrm{Mg^{2+}/Mg} electrode having 0.010.01 M concentration of Mg2+\mathrm{Mg^{2+}} (E∘Mg2+/Mg=−2.36(E^\circ\mathrm{Mg^{2+}/Mg} = -2.36 V).

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  11. Question 11

    15 May 2026 S1

    24
    Identify the EredE_{red} value from following, if CuSO4\mathrm{CuSO_4} solution dipped with Cu rod is diluted to 1010 times.

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