CBSE Class 10 Answered

Any elementary gas appearing on either side of the equation is written in atomic state.

the formula containing maximum no. of atoms is selected for starting the balancing process if it is not convinient then start with the atom that appear minimum no. of times.

atoms of elementary gases are balanced at the last.

once balancing is complete convert it to molecular form.

Problem

12. Balance the chemical equation,

By hit and trial method.

Solution

(i) Skeletal equation

(ii) Elementary gas in atomic form

(iii) Starting with KMnO₄: K and Mn are balanced

(vii) To make it molecular

So the balanced molecular equation is