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Chemistry
Chemistry
Problem
10 g of
Fe
3
O
4
\text{Fe}_3\text{O}_4
Fe
3
O
4
is oxidised completely by 50 mL of 0.1 M
KMnO
4
\text{KMnO}_4
KMnO
4
solution. The mass in g of
Fe
2
O
3
\text{Fe}_2\text{O}_3
Fe
2
O
3
in
Fe
3
O
4
\text{Fe}_3\text{O}_4
Fe
3
O
4
is: a. 1.8 b. 8.2 c. 4.1 d. 5.9
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