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Question

aFe+bO2 cFe2O3
For the above equation to represent a balanced equation, ratio of a, b and c respectively should be?
  1. 2:3:4

  2. 4:3:2

  3. 4:3:3

  4. 4:1:3


Solution

The correct option is B

4:3:2


4Fe+3O2 2Fe2O3
By balancing the number of atoms on both sides (reactant and product) of each element (Iron and Oxygen), we get a balanced equation:4Fe+3O2 2Fe2O3 Which gives us ratio of a:b:c as 4:3:2.

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