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The rusting of iron is a process where the iron reacts with oxygen to form rust. Chemically the reaction may be written as:
a Fe + b O2 + → c Fe2O3.
In the balanced chemical reaction, the coefficient of Fe ‘a’ is:
  • a)
    2
  • b)
    3
  • c)
    4
  • d)
    5
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
The rusting of iron is a process where the iron reacts with oxygen to...
Balancing Oxygen:
LHS = 2
RHS = 3
LCM (2,3) = 6
Multiply Oxygen on LHS by 3 and on RHS by 2
a Fe + 3 O2 + → 2 Fe2O3
Balancing Fe:
RHS = 4
LHS = 1
Multiply Fe on LHS by 4
4 Fe + 3 O2 + → 2 Fe2O3
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The rusting of iron is a process where the iron reacts with oxygen to form rust. Chemically the reaction may be written as:a Fe + b O2 + → c Fe2O3.In the balanced chemical reaction, the coefficient of Fe ‘a’ is:a)2b)3c)4d)5Correct answer is option 'C'. Can you explain this answer?
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