We know that balancing of a chemical equation is entirely  bases on law of conservation of mass.
Channel: Doubtnut
Date: 26/04/2020

We know that balancing of a chemical equation is entirely  bases on law of conservation of mass. However the concept of Principle of Atom Conservation (POAC) can also be related to law of consevation of mass in a chemical reaction. So, POAC can also act as a technique  for balancing  a chemical equation. For example, for a reaction:   `ABC_(3) rarr AB+C_(2)`   On applying POAC  for A , B and C  and related the equations , we get : `(n_(ABC_(3)))/(2) =(n_(AB))/(2) =(n_(C_(2)))/(3)`   (`n_(x)` : number of moles of X)   Thus , the cofficients of `ABC_(3)` , AB  and `C_(2)`  in the balanced chemical equation will be 2,2 and 3 respectively and the balanced chemical equation can be represented as ,   `2ABC_(3) rarr 2AB + 3C_(2)`   For the unbalanced chemical equation given below, which of the following statement is correct?   `X+Y_(2) rarr XY_(3)`