The balanced equation always obey the law of conservation of mass.
- As the balanced equations have equal number of atoms in both that is reactants and product side.
- that means the number of atoms on both the sides are equal before or after the reaction.
- for example an unbalanced equation
- N2 + H2 = NH3
- here before the reaction, the number of atoms of nitrogen is 2 but after the reaction the number of atom of nitrogen is 1.
- Same , The number of atom of hydrogen is 2 and after the reaction the number of atoms of hydron is 3.
- Change in the atomic number causes the change in the mass of the element. hence in this equation the mass is not conserved.
- SO, for the conservation of the mass , the number of atoms should be equal in both the side.
- for example , for balanced equation
- N2 + 3H2 = 2NH3
- Here the number of atoms of nitrogen is 2 in both the sides.
- The number of atoms of hydrogen is 6 in both the sides.
since the number of atoms are same in both the sides of the reactions then the mass of the elements/ compound is also same.
Hence the mass is conserved in balanced equation.
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