Three faradays of charge is passed through an aqueous solution of NaClO3 when NaClO4 is formed according to the reaction: NaClO3 + H2O → NaClO4 + H2 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
NaClO3 + H2O → NaClO4 + H2 Oxidation number of chlorine changes from +5 (in NaClO3) to +7 (in NaClO4) Thus 2 faraday of charge will form one mole of NaClO4 as 2F gives 2 moles of electrons. 3 faraday of charge will form 3/2= 1.5 mole of NaClO4 .
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