Question

Calculate the EMg²⁺/Mg potential for the following half cell at 25°C : Mg/Mg²⁺ (1 × 10⁻⁴ M); E°Mg²⁺/Mg = + 2·36 V [Given : log 10 = 1]

Calculate the potential for half-cell containing 0.01 M K₂Cr₂O₇(aq), 0.01 M Cr³⁺(aq) and 1.0 × 10⁻⁴ M H⁺(aq). The half cell reaction is: Cr₂O₇²⁻(aq) + 14H⁺(aq) + 6e⁻ → 2Cr³⁺(aq) + 7H₂O(l) and the standard electrode potential is given as E° = 1.33 V. [Given : log 10 = 1]