The standard reduction potentials of $C u^{2 +} ∣ C u$ and $C u^{2 +} ∣ C u^{⨁}$ are 0.337 V and 0.153 V, respectively. The standard electrode potential of $C u^{⨁} ∣ C u$ half cell is:

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Answer 1

$C u^{2 +} + 2 e^{-} \to C u . . . (i) E_{1}^{⊝}$

$C u^{2 +} + e^{-} \to C u^{⨁} . . . (i i) E_{2}^{⊝}$

Net equation $(C u^{⨁} + e^{-} \to C u) . . . (i i i)$

$E_{3}^{⊝} = \frac{n _{1} E _{1}^{⊝} - n _{2} E _{2}^{⊝}}{n _{3}} = \frac{2 \times 0 . 3 3 7 - 1 \times 0 . 1 5 3}{1} = 0.521 V$

Hence, option C is correct.

Answer 2

C u^{2 +} + 2 e^{-} \to C u . . . (i) E_{1}^{⊝}

C u^{2 +} + e^{-} \to C u^{⨁} . . . (i i) E_{2}^{⊝}

Net equation

(C u^{⨁} + e^{-} \to C u) . . . (i i i)

E_{3}^{⊝} = \frac{n _{1} E _{1}^{⊝} - n _{2} E _{2}^{⊝}}{n _{3}} = \frac{2 \times 0 . 3 3 7 - 1 \times 0 . 1 5 3}{1} = 0.521 V

Hence, option C is correct.

The standard reduction potentials of $C u^{2 +} ∣ C u$ and $C u^{2 +} ∣ C u^{⨁}$ are 0.337 V and 0.153 V, respectively. The standard electrode potential of $C u^{⨁} ∣ C u$ half cell is:

0.184 V

0.827 V

0.521 V

0.490 V

Solution

0.521 V

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The standard reduction potentials of Cu2+∣Cu and Cu2+∣Cu⨁ are 0.337 V and 0.153 V, respectively. The standard electrode potential of Cu⨁∣Cu half cell is:

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Cu2++2e−→Cu...(i)E1⊝​ Cu2++e−→Cu⨁...(ii)E2⊝​ Net equation (Cu⨁+e−→Cu)...(iii) E3⊝​=n3​n1​E1⊝​−n2​E2⊝​​=12×0.337−1×0.153​=0.521V Hence, option C is correct.

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The standard reduction potentials of $C u^{2 +} ∣ C u$ and $C u^{2 +} ∣ C u^{⨁}$ are 0.337 V and 0.153 V, respectively. The standard electrode potential of $C u^{⨁} ∣ C u$ half cell is: