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Question

How to balance the chemical equation Na+O2Na2O.


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Solution

Balancing chemical equation:

The given equation is; Na+O2Na2O

Steps to balance the equation:

Step 1: Write the unbalanced Chemical Equation

The unbalanced equation :Na+O2Na2O

Step 2: Write down the number of atoms

Write down the number of atoms of each element present on both reactant as well as product side

AtomReactant sideProduct side
Na12
O21

Step 3: Add coefficients to balance mass in a chemical equation

  • First balance O atoms and then atoms of Na by trial and error method.
  • Add a stoichiometric coefficient of 2 on the product side to first balance the O atoms.
  • Then for balancing the Na atoms, add a stoichiometric coefficient of 4 on the reactant side and it will balance the whole reaction given by; 4Na(s)Sodium+O2(gOxygen)2Na2OSodiumoxide(s)

Hence, the balanced equation is: 4Na(s)Sodium+O2(gOxygen)2Na2OSodiumoxide(s)


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