Question

A balanced chemical equation is in accordance with law of _________?

Answer 1

Law of Conservation of Mass or Matter: According to the law of conservation of mass,

Matter can neither be created nor be destroyed in a chemical reaction.
The law of conservation of mass means that in a chemical reaction, the total mass of products is equal to the total mass of the reactants. There is no change in mass during a chemical reaction.
Suppose we carry out a chemical reaction between A and B and if the products formed are C and D
then,
$\mathrm{A}+\mathrm{B}\to \mathrm{C}+\mathrm{D}$
Suppose 'a' g of reactant ‘A’ and ‘b’ g of reactant ‘B’ react to produce 'c' g of product ‘C’ and 'd' g of the product ‘D’.

Then, according to the law of conservation of mass, we have,
a + b = c + d

Hence, a balanced chemical equation is in accordance with the law of conservation of mass.