Redox Reactions And Electrochemistry Ques 459
Question: Oxidation state of $ Fe $ in $ Fe_3O_4 $ is [CBSE PMT 1999; AIIMS 2002]
Options:
A) $ \frac{3}{2} $
B) $ \frac{4}{5} $
C) $ \frac{5}{4} $
D) $ \frac{8}{3} $
Show Answer
Answer:
Correct Answer: D
Solution:
$ \overset{*}{\mathop{F}},e_3O_4 $ $ 3x+(-8)=0 $ ; $ 3x-8=0 $ $ 3x=8 $ ; $ x=\frac{8}{3} $ .
