Balancing a chemical equation
According to the law of conservation of mass a balanced chemical equation has the same
number of atoms of each element on both sides of the countion. Many chemical allons !
be balanced by trial and error. Let us take the reactions of a few mins and metals with
oxygen to give oxides
4 Fe(s) + 30,(g) 2Fe 0,(s) (a) balanced equation
2 Mg(s) + 0,1g 2Mgo(s) (b) balanced equation
P,(s) + 0, (g) - P,0..(s) (c) unbalanced equation
Equations (a) and (b) are balanced, since there are same number of metal and Oxen atoms on
Answers
Answer:
Chemical reaction which is represented in the form of symbols (substances) is known as a chemical equation. A chemical reaction or equation consists of reactants, products, and an arrow showing the direction of the reaction and the product. A chemical reaction which contains the same number of atoms of all the molecules on both sides is known as a balanced chemical equation.
Complete step by step answer:
Balancing of a chemical equation is governed by the law of conservation of mass. According to the law of conservation of mass, mass can neither be created nor destroyed in a chemical reaction due to this the total mass of the element present on the reactant should be equal to the total mass of the element present on the product side. If a chemical reaction does not follow the law of conservation of mass then the chemical reaction is said to be an unbalanced chemical equation.
After discussing we can conclude that a balancing of a chemical equation is according to the law of conservation of mass.