AIPMT PRELIMS 2011 Chemistry Electrode Potential MCQ Question
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
+1.83 V
+1.19 V
+0.89 V
+0.18 V
Correct Answer
Detailed Explanation
E°_cell = E°_cathode(RP) − E°_anode(RP) = 0.15 − (−0.74) = +0.89 V.
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