Practice question
Question
What is the standard emf of a cell with the reaction Cr(s) + 3Ag⁺(aq) → Cr³⁺(aq) + 3Ag(s) ? (Given: E°Cr³⁺/Cr = -0.74 V , E°Ag⁺/Ag = 0.80 V )
Explanation
E°cell = E°cathode - E°anode = 0.80 - (-0.74) = 1.54 V .
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