Respuesta :
Explanation:
An equation that contains same number of atoms on both reactant and product side is known as a balanced chemical equation.
Also, mass of substances involved and formed in a chemical reaction will be equal.
For example, [tex]2K + Cl_{2} \rightarrow 2KCl[/tex]
Number of K atoms on both reactant and product side are 2.
Number of Cl atoms on both reactant and product side are 2.
Therefore, this equation is balanced.
Also, mass of K = 39.09 g/mol, mass of Cl = 35.45 g/mol.
Sum of reactant molecules = [tex](2 \times 39.09 g/mol) + (2 \times 35.45 g/mol)[/tex]
= 149.08 g/mol
Sum of product molecules = [tex]2 \times (39.09 g/mol + 35.45 g/mol)[/tex]
= 149.08 g/mol
Therefore, masses of atoms involved is same on both reactant and product side.
Thus, we can conclude quantity or quantities that must always be the same on both sides of a chemical equation are as follows.
- the number of atoms of each kind.
- the sum of the masses of all substances involved.
The quantities which must always be the same on both sides of a chemical equation is:
(a) the number of atoms of each kind.
(d) the sum of the masses of all substances involved.
A chemical reaction refers to a chemical process that involves the rearrangement or transformation of the ionic, atomic or molecular structure of a chemical element through the breakdown and formation of chemical bonds in order to produce a new compound.
A chemical equation is typically used to denote or represent a chemical reaction between two or more chemical elements.
A balanced chemical equation is one in which the number of atoms on the reactant (left) side is equal to the number of atoms on the product (right) side.
This ultimately implies that, both the charge on each atom and sum of the masses of the chemical substances in a chemical equation are properly balanced.
Additionally, all chemical equations must be in accordance with the Law of Conservation of Mass because mass can neither be created nor destroyed.
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