How to balance chemical equation?

Answers (1)
S Sumit

For balancing a chemical reaction, number of atoms on the right hand side should be equal to that on the left hand side 

Let us take an example of the following reaction 
H2O----->H2 + 02 
in this equation, to it is needed to  balance the number of hydrogen atoms and the number of oxygen atoms.

There are 2 atoms of hydrogen and 1 atom of oxygen on the left hand side and 2 atoms of hydrogen and 2 atoms of oxygen on the right hand side.

we need to add 2 on the left side of H2O on the left hand side and 2 on the left side of H2 on the right hand side.

these 2 gets multiplied with the number of atoms of the element beside which it lies.

Final bananced equation is- 

2H2O----->2H2 + 02

 

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