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Standard electrode potential for Sn⁴⁺/Sn²⁺ couple is +0.15 V and that for the Cr³⁺ /Cr couple is -0.74 V. These two couples in their standard state are connected to make a cell. The cell potential will be

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+0.19 V

+0.89 V

+0.18 V

+1.83 V

answer is B.

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Detailed Solution

E^o_cell = E^o_cathode – E^o_anode

= 0.15 – (–0.74) = 0.89 V

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