Practice question
Question
In 2CrO₃ + 3H₂O₂ + 2KOH → 2KCrO₄ + 4H₂O, how many electrons are transferred per mole of CrO₃?
Explanation
Cr (+6 in CrO₃) remains +6 in CrO₄²−; O (-1 in H₂O₂) to -2: 3 O gain 6 electrons total. No redox for Cr; focus on H₂O₂, but per CrO₃ context = 0 for Cr change.
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