Three faradays of charge are passed through an aqueous solution of NaClO₃ when NaClO₄ is formed. How many moles of NaClO₄ will be formed during the electrolysis?
Correct answer: C. 1.5
- A. 0.75
- B. 1.0
- C. 1.5
- D. 3.0
Explanation
The reaction is ClO₃⁻ → ClO₄⁻. The oxidation state of Cl changes from +5 to +7, a loss of 2 electrons. Therefore, 2 Faradays of charge are needed to produce 1 mole of NaClO₄. With 3 Faradays, the amount produced will be 3/2 = 1.5 moles.
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