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Question

Balance the following equations.
Ca+O2CaO


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Solution

Balanced chemical equation -

  • A chemical equation is said to be balanced if the number of atoms of each element on the left-hand side is equal to the number of atoms present on the right-hand side.
  • In order to balance a chemical equation, it is required to know what are reactants that are taking part in a chemical reaction and what are products will be formed.

Balancing a chemical equation-

Using Hit by trial method

Ca+O2CaO

ElementsNumber of atoms on reactant sideNumber of atoms on product side
Ca11
O21
  1. To balance O, put coefficient 2 on the right-hand side. Ca+O22CaO
  2. On doing the above step, balance the Ca by multiplying 2 on the left side 2Ca+O22CaO
  3. Hence, the balanced chemical equation is 2Ca+O22CaO

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