5. How many Faradays of charge are strictly required to reduce 1 mole of ions completely to ? — Electrochemistry Chemistry Question

💡 Solution & Explanation

In acidic medium, the reduction half-reaction is $Cr_2O_7^{2-} + 14H^+ + 6e^- \rightarrow 2Cr^{3+} + 7H_2O$. It requires 6 moles of electrons per mole of dichromate, which equates to 6 Faradays (6 F).