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  4. The amount of charge in F (Faraday) required to obtain one mole of iron from Fe 3 O 4 is . (Nearest Integer)

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Q. The amount of charge in $F$ (Faraday) required to obtain one mole of iron from $Fe _3 O _4$ is _______ . (Nearest Integer)

JEE MainJEE Main 2022Electrochemistry

Solution:

$Fe _3 O _4 \xrightarrow{+8 e ^{-}} 3 Fe$
Charge for 1 mole $Fe =8 / 3 F$
$=2.67 F$