Question

if chemical equation is not balance then what will happen

Answer 1

$\bold{Hey \: mate \: here \: is \:your \: ANSWER}$

If a chemical equation is not balanced it implies that either mass has been created or destroyed which is a contradiction to law of conversation of mass which states that matter can niether be created nor destroyed .

$\huge{\red{\boxed{\mathbb{HOPE \:IT \:HELPS}}}}$

$<marquee>PLEASE MARK AS BRAINLIEST$

Answer 2

Any chemical equation that cannot be balanced is one that cannot represent associate degree actual chemical process, thus answers to the current question will not offer you any helpful insights into chemistry.

Chemical equations got to be balanced so as to satisfy the law of conservation of matter, that states that in an exceedingly closed system matter is neither created nor destroyed.  If a chemical equation is not balanced properly it's mean it doesn't follow the Law of conservation of mass that is must to be followed in any reaction of the world.

Anyway, here's associate degree example:

H2O + NO2 -----> HNO3

In order to balance the equation, we tend to should modification the amounts of the reactants and product, as necessary, by adding coefficients ahead of the acceptable formula(s).