MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryElectrochemistryGeneral

Standard electrode potential of cell is (EºAg+/Ag = 0.80V)

A.0.8 V
B.–0.8 V
C.–1.2 V✓ Correct
D.1.2 V
Explanation

Here, according to the formula, 35. For a cell given below: Ag/Ag+ || Cu+2/Cu Ag+ + e-→Ag; Eº = x Cu+2 + 2e-→ Cu; Eº = y Eº cell is (a) x + 2y (b) 2x + y (c) y – x (d) y – 2x At oxidation, the reaction will be: At reduction, the reaction will b When we combine both the reaction, we get: The cell potential will be: 36. Aluminium displaces hydrogen from dilute HCl whereas silver does not. The emf of a cell prepared by combining and is 2.46 V. The reduction potential of silver electrode is +0.80 V. The reduction potential of aluminium electrode is (a) +1.66V (b) –3.2

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