Question

The composition of a sample of iron oxide is $F{e}_{0.93}{O}_{1.0}$. What percentage of iron is present in the form of Fe(III)?

• A. $5.053$
• B. $10.053$
• C. $15.053$
• D. None of the above

Answer 1

The correct option is C $15.053$

Let the percentage amount of Fe(III) be x and the amount of Fe(II) be $1-x$. Hence,
$3x+2(1-x)=2/0.93=2.15053$
On solving, we get, $x=0.15053$
So, % of Fe(III) = 15.053