Question

how do you balance a chemical equation using simple method with example

Answer 1

Answer:

First, write down the equation and observe it (I'll take an easy example to understand):

H2 + O2 --> H2O

Then, write down the number of molecules of the L.H.S. and R.H.S. separately

L.H.S. R.H.S.

H = 2 H = 2

O = 2 O = 1

As you can see, the number of molecules are not equal on the both sides of the equation. So, we multiply the molecules on either side to make their numbers equal.

L.H.S.  R.H.S.

H = 2 x 2 = 4 H = 2 x 2 =4

O = 2  O = 1 x 2 = 2

Notice that if the molecule is in a compound, you have to multiply all the molecules of that compound with the same number.

If there are, sometimes, two molecules of the same element, one in a compound and other one distinct as alone. For ex sometimes you will see hydrogen both in a compound and as an element alone on one side of the equation. To solve this, take the sum of number of molecules present in the elements/compounds and multiply accordingly.

(NOTE: If you multiply the element molecule, it is not necessary that the molecules of that in with the compound form should be multiplied)

Hope I helped