Question

A chemical equation needs to be balanced. Give reason.

Answer 1

Explanation:

The chemical equation needs to be balanced so that it follows the law of conservation of mass. A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side. Balancing chemical equations is a process of trial and error.

Answer 2

Answer:

Chemical reactions follow the law of conservation of mass. Chemical equations show this conservation of mass in the terms of atoms

so it's vital to balance the equations to show correct composition of mass.

to balance an equation we simply have to equalise the number of atoms on both the sides of an equation.

For Ex:- Water

H2 + O2 ➡️➡️➡️ H2O

Zn(s) + H2sO4 (aq) ➡️➡️➡️➡️ ZnSO4 (aq)+H2(g)