17.The number of electrons lost or gained during the change, Re, 4H O- – InterviewSolution

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17.The number of electrons lost or gained during the change, Re, 4H O-→Fep,-4H), is(A) 2(B) 4(C) 6n Mn and Mn.then

Answer»

here the oxidation state of Fe in 3Fe = 0 and in Fe3O4 is 8/3 .. so lost in electrons is 8/3 so for 3 moles of Fe , the lost is (8/3)*3 = 8.

option D.

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