Question

The chemical equation is balanced to satisfy one of the following laws in chemical reactions. This law is known as the:

• A. law of conservation of mass.
  
• B. law of multiple proportions
  
• C. law of chemical equilibrium.
  
• D. none of these

Answer 1

The correct option is A law of conservation of mass.

Basically, the chemical equations are the symbolic representations of chemical reactions in which the reactants and products are expressed in terms of their respective chemical formulae. These equations satisfy the law that matter can be changed from one form into another but the total amount of mass remains constant. According to the law of conservation of mass, the mass of products in a reaction must be equal to the mass of reactants so the balancing of equations is done to obey this law.