What is the standard emf of a cell with the reaction 2Al(s) + 3Cd²⁺(aq) → 2Al³⁺(aq) + 3Cd(s) ? (Given: E°Al³⁺/Al = -1.66
E°cell = E°cathode - E°anode = -0.40 - (-1.66) = 1.26 V .
Ref: NCERT Class 12 Chemistry > Chapter 2: Electrochemistry > Topic: Corrosion and Applications of Electrochemistry