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Question

A balanced reaction between Fe and O2 to give magnetic oxide is :
  1. 2Fe+O22FeO
  2. 3Fe+2O2Fe3O4
  3. Fe+2O2Fe3O4
  4. 2Fe+2O2Fe2O3

A
Fe+2O2Fe3O4
B
2Fe+2O2Fe2O3
C
3Fe+2O2Fe3O4
D
2Fe+O22FeO
Solution
Verified by Toppr

Iron is converted to iron(II, III) oxide.

Fe3O4 is a magnetic oxide.

3Fe+2O2Fe3O4

Hence, option (C) is correct.

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Determine the heat of the following reaction:
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Fe3O4(s)3Fe(s)+2O2(g);ΔHo=+1118.4kJ
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