[dawnfox]

How many moles of electrons are needed to oxidize 115 g Fe to Fe3+?

[billnotgatez]

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[dawnfox]

im so sorry! i did read the guidelines but i guess i skipped over that exact point. thank you.
so i did attempt it a bit on paper but im stuck with the grams part. i know that fe is oxidized to fe3+. i know the charge on an electron is 1.602 x 10^-19 & i have avogadros number but how im supposed to go about solving this has me confused as well as the 115 grams

[Borek]

Charge of an electron doesn't matter. How many electrons required to oxidize one atom of Fe to Fe³⁺? To oxidize dozen of atoms? How many moles of electrons required to oxidize mole of atoms?

[dawnfox]

3 electrons needed to oxidize one atom of fe to fe3+ right?

[Borek]

Yes.

It just occurred to me the question is poorly worded - technically to oxidize the atom electrons are not needed but rather they need to be taken from the atom, but the number is OK.