The standard reduction potentials of Cu2+ / Cu and Cu2+/ Cu+ are 0.337 and 0.153V respectively. The standard electrode potential of Cu+/Cuhalf-cell is:

n3E30=n1E10+n2E202×0.337=1×0.153+1×E20E20=0.674−0.153E20=0.521V

The standard reduction potentials of Cu2+ / Cu and Cu2+/ Cu+ are 0.337 and 0.153V respectively. The standard electrode potential of Cu+/Cuhalf-cell is:

n3E30=n1E10+n2E202×0.337=1×0.153+1×E20E20=0.674−0.153E20=0.521V

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

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0.521 V

0.827 V

0.184 V

0.490 V

answer is C.

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$\begin{array}{l} n_{3} E_{3}^{0} = n_{1} E_{1}^{0} + n_{2} E_{2}^{0} \\ 2 \times 0.337 = 1 \times 0.153 + 1 \times E_{2}^{0} \\ E_{2}^{0} = 0.674 - 0.153 \\ E_{2}^{0} = 0.521 V \end{array}$

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The standard reduction potentials of Cu2+ / Cu and Cu2+/ Cu+ are 0.337 and 0.153V respectively. The standard electrode potential of Cu+/Cuhalf-cell is:

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