WAEC Chemistry 2020 Objective — Question 5
Question 5 of 50 from the West African Examinations Council (WAEC) Chemistry 2020 Objective paper, with the correct answer and a full explanation.
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What quantity of electrons is lost when one mole of iron (II) ions is oxidized to iron (III) ions?
- A. 0 mole
- B. 1 moleCorrect
- C. 2 moles
- D. 3 moles
Explanation
Fe2+ -> Fe3+ + e-. Thus, the oxidation of one mole of Fe2+ into Fe3+ requires the loss of one mole of electrons.
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