1. How many Faradays of charge are strictly required to reduce 1 mole of ions completely to in an ac — Electrochemistry Chemistry Question
Question
1. How many Faradays of charge are strictly required to reduce 1 mole of $Cr_2O_7^{2-}$ ions completely to $Cr^{3+}$ in an acidic medium?
Answer: B
💡 Solution & Explanation
In acidic medium, $Cr_2O_7^{2-} + 14H^+ + 6e^- \rightarrow 2Cr^{3+} + 7H_2O$. The reaction requires 6 moles of electrons per mole of dichromate, which equals 6 Faradays (6 F).
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