On What basis a chemical equation balanced Class 10th

We know chemical reactions are written in the form of equations. We have already discussed types of chemical reactions and learnt how to balance a chemical equation.

But the question is on what basis is a chemical equation balanced?

Basis of balancing chemical equation

Atoms of substances(elements/compounds) take part in a chemical reaction and form different new substances’ reaction is written in the form of an equation.

The atoms of reactants and products are written in the chemical equation.

According to the ‘Law of conservation of mass’, a chemical equation should be balanced.

Law of conservation of mass – Matter always remains conserved. It is neither created nor destroyed in a chemical reaction. That’s why a chemical equation is balanced.

So the number of atoms of reactants and products must be balanced.

Eg.

 

  1.       2HNO₃ +Ca(OH)₂ →Ca(NO₃)₂

  2.      2NaOH + H₂SO₄ →Na₂SO₄ + 2H₂O

  3.      NaCl +AgNO₃ →AgCl + NaNO₃

  4.     BaCl₂ + H₂SO₄ →BaSO₄ + 2HCl

  5.     Ca(OH)₂  +CO₂ →CaCO₃ + H₂O

 

You can see in the above examples, the number of atoms on both sides is balanced.

FAQs

   1. What is a balanced chemical equation class 10th?

Ans – The chemical equation in which the number of atoms of different elements is equal in the reactant and product sides is called a balanced chemical equation.

   2. What is the aim of balancing a chemical equation?

Ans- To establish the law of conservation of mass, a chemical equation must be balanced.

   3. What is a chemical reaction class in 10^th science?

Ans – A change in which the chemical composition of the substance is changed is called a chemical change.