What is a balanced chemical equation? Why should chemical equations be balanced?
Answers
Answer:
A balanced chemical reaction is an equation that has equal numbers of each type of atom on both sides of the arrow.
A chemical equation is a written symbolic representation of a chemical reaction. The reactant chemical(s) are given on the left-hand side and the product chemical(s) on the right-hand side.
The law of conservation of mass states that atoms can neither be created nor destroyed in a chemical reaction, so the number of atoms that are present in the reactants has to balance the number of atoms that are present in the products.
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☘️ Answer:
A chemical change is represented by a chemical equation. When the number of atoms of different elements on reactant and product side are equal, then the equation is called a balanced chemical equation.
It is important to balance a chemical equation because
(i)to validate the law of conservation of mass which states that the mass of reactants should be equal to the mass of the products. The total mass of a system is thus conserved.
This law holds true only if number of atoms of reactants reacting together is equal to number of product atoms formed.
(ii) a balanced chemical equation tells us about the physical state of the reactants and products whether they are solid (s), liquid (l) or gas (g) or aqueous (aq)
(iii) it tells us about heat changes that can take place
in a chemical reaction. ∆ is the symbol of heat. Hence, it is endothermic or exothermic can be deduced from a balanced chemical equations.