JAMB Chemistry 2016 Objective — Question 2

Question 2 of 40 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2016 Objective paper, with the correct answer and a full explanation.

2. MnO4-(aq) + Y + 5Fe2+(aq) → Mn2+(aq) + 5Fe3+(aq) + 4H2O. In the equation above, is A. 10H+ B. 5H+ C. 8H+ D. 4H+

A. 10H+
B. 5H+
C. 8H+Correct
D. 4H+

Explanation

The balanced equation for the redox reaction between Fe2+ and MnO4- in acidic medium requires 8H+.

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