A) \[3Fe+4{{H}_{2}}O\to F{{e}_{3}}{{O}_{4}}+4{{H}_{2}}\]
B) \[KCI{{O}_{3}}\to KCI+{{O}_{2}}\]
C) \[CaC{{O}_{3}}\to Ca+C{{O}_{2}}\]
D) \[Mg+2HCI\to MgC{{I}_{2}}+{{H}_{2}}\]
Correct Answer: B
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