In the balanced redox reaction between MnO 4 - and Fe 2+ , which of the followin
ID: 555242 • Letter: I
Question
In the balanced redox reaction between MnO4- and Fe2+, which of the following is true?
Question options:
1 mole MnO4- reacts with 2 moles Fe2+
1 mole MnO4- reacts with 1 mole Fe2+
1 mole MnO4- reacts with 5 moles Fe2+
1 mole MnO4- reacts with 4 moles Fe2+
4 moles MnO4- reacts with 1 mole Fe2+
3 moles MnO4- reacts with 1 mole Fe2+
5 moles MnO4- reacts with 1 mole Fe2+
1 mole MnO4- reacts with 3 moles Fe2+
2 moles MnO4- reacts with 1 mole Fe2+
1 mole MnO4- reacts with 2 moles Fe2+
1 mole MnO4- reacts with 1 mole Fe2+
1 mole MnO4- reacts with 5 moles Fe2+
1 mole MnO4- reacts with 4 moles Fe2+
4 moles MnO4- reacts with 1 mole Fe2+
3 moles MnO4- reacts with 1 mole Fe2+
5 moles MnO4- reacts with 1 mole Fe2+
1 mole MnO4- reacts with 3 moles Fe2+
2 moles MnO4- reacts with 1 mole Fe2+
Explanation / Answer
MnO4- is reduced to Mn+2
That is oxidation state of Mn changes from +7 oxidation state to +2 oxidation state
change= -5
Fe2+ is oxidised to Fe3+
That is oxidation state of Fe changes from +2 oxidation state to +3 oxidation state
change = +1
so, there should be 5 moles of fe2+ getting oxidised per mol of MnO4- reduced
Answer: 1 mole MnO4- reacts with 5 moles Fe2+
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