Practice question
Question
In 2KMnO₄ + 16H₂SO₄ + 10NaBr → 5Br₂ + 2MnSO₄ + 8H₂O + 5Na₂SO₄ + K₂SO₄, how many electrons are transferred?
Explanation
Mn (+7 to +2): 2 Mn gain 10 electrons. Br (-1 to 0): 10 Br lose 10 electrons. Total = 10.
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