"Given that the standard potentials (Eo) of Cu2+/Cu and Cu+/Cu are 0.34 V and 0.522 V respectively, the Eo of Cu2+/Cu+ :"

"Cu +2 + 2e – $\\to$ Cu E o = 0.34 V ....(1)\n Cu + + e – $\\to$Cu E o = 0.522 V\n Cu $\\to$ Cu + + e – E o = -0.522 V ...(2)\n By adding (1) and (2) we get,\n Cu +2 + e – $\\to$ Cu + \n E o cell = ${{0.34 \\times 2 + 1 \\times \\left( { - 0.522} \\right)} \\over 1}$ = 0.158 V"

Medium MCQ +4 / -1 PYQ · JEE Mains 2020

Given that the standard potentials (E^o) of Cu²⁺/Cu and Cu⁺/Cu are 0.34 V and 0.522 V respectively, the E^o of Cu²⁺/Cu⁺ :

A - 0.182 V
B - 0.158 V
C 0.182 V
D +0.158 V Correct answer

Solution

Cu+2 + 2e– $\to$ Cu    Eo = 0.34 V ....(1) Cu+ + e– $\to$Cu    Eo = 0.522 V Cu $\to$ Cu+ + e–     Eo = -0.522 V ...(2) By adding (1) and (2) we get, Cu+2 + e– $\to$ Cu+ Eocell = ${{0.34 \times 2 + 1 \times \left( { - 0.522} \right)} \over 1}$ = 0.158 V

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Subject: Chemistry · Chapter: Electrochemistry · Topic: Electrochemical Cells

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Given that the standard potentials (Eo) of Cu2+/Cu and Cu+/Cu are 0.34 V and 0.522 V respectively, the Eo of Cu2+/Cu+ :

Solution

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Given that the standard potentials (E^o) of Cu²⁺/Cu and Cu⁺/Cu are 0.34 V and 0.522 V respectively, the E^o of Cu²⁺/Cu⁺ :