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Standard potential of an electrode reaction that is reversed and multiplied by 2

The same question, asked 3 times: 20 Apr 2025 S1*, 23 Apr 2025 S1*, 12 May 2026 S1. Every wording below, oldest first.

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  1. Question 1

    20 Apr 2025 S1

    57
    Standard potential ( E∘E^{\circ} ) of Zn(aq)+2+2e−⟶Zn(s)Zn_{(aq)}^{+ 2}+ 2e^{-}\longrightarrow Zn_{(s)} is -0.76 V . What is standard potential of reaction 2Zn(s)⟶2Zn(aq)+2+4e−2Zn_{(s)}\longrightarrow 2Zn_{(aq)}^{+ 2}+ 4e^{-}?

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  2. Question 2

    23 Apr 2025 S1

    80
    Standard potential of electrode reaction Cu(aq)+2+2e−⟶Cu(s)Cu_{(aq)}^{+ 2}+ 2e^{-}\longrightarrow Cu_{(s)} is +0.34 V. What is standard potential of reaction 2Cu(s)⟶2Cu(aq)+2+4e−2Cu_{(s)}\longrightarrow 2Cu_{(aq)}^{+ 2}+ 4e^{-}?

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  3. Question 3

    12 May 2026 S1

    25
    The standard electrode potential for Ag(aq)++e−→Ag(s)\mathrm{Ag^+_{(aq)} + e^- \rightarrow Ag_{(s)}} is 0.790.79 V. What is the stranded potential for the reaction: 2Ag(s)→2Ag(aq)++2e−\mathrm{2Ag_{(s)} \rightarrow 2Ag^+_{(aq)} + 2e^-}.

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