Question

Progre

Chemical Reactions - Problems
Corred
Incorre
1 AI
+
1 Fe3O4
1 Fe
-
1 Al2O3
+
Al atoms: 1
Al atoms: 2
Fe atoms: 1
Fe atoms: 3
O atoms: 4.
O atoms: 3
Balance the reaction above.
Submit your answer

Answer 1

aAl + 1Fe₃O₄ ⇒ bFe + cAl₂O₃

Fe, left = 3, right = b⇒ b = 3

O, left = 4, right = 3c ⇒ c = 4/3

Al, left = a, right = 2c ⇒ a = 2c ⇒ a = 2.4/3 = 8/3

8/3Al + Fe₃O₄ ⇒ 3Fe + 4/3Al₂O₃ x3

8Al + 3Fe₃O₄ ⇒ 9Fe + 4Al₂O₃