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The molar mass of Fe2O3 is 55.845 (molar mass of iron)*2+16(molar mass of oxygen)*3, which comes out to be 159.69 grams per mole. Multiply that by the number of moles, and the answer is 223.57 grams.

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13y ago
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13y ago

The oxidation 1/2 reaction for iron is:

Fe2+ --> Fe3+ + e-

The reduction 1/2 reaction for permanganate is:

8H+ + MnO4- + 5e- --> Mn2+ + 4H2O

From this we can see that 5 moles of iron can be oxidized for every mole of permanganate that can be reduced.

In other words... 5 times as much iron can be oxidized as there is permanganate present.

Therefore the amount of Fe2+ that can be oxidized is:

1.4x10-2 mol x 5 = 7.0x10-2 mol.

Answer: 7.0x10-2 mol of Fe2+

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Q: How many moles of Fe2 plus ion can be oxidized by 1.4x10-2 moles MnO4- ion?
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