Question

If the number of atoms of each element in the products equals the number of atoms of each element in the reactant the equation is
a. an acid base reaction
b. balanced
c. spontaneous
d. not spontaneous

Answer 1

Answer: The correct answer is Option b.

Explanation:

Law of conservation of mass states that mass can neither be created nor be destroyed but it can only be transformed from one form to another. Every balanced chemical equation follows law of conservation of mass.

This also states that total number of atoms of each element on the reactant side must be equal to the total number of atoms of each element on product side.

From the above information, the correct answer is Option b.

Answer 2

Answer : The correct option is, (b) balanced

Explanation:

Law of conservation of mass : It states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.

The balanced chemical reaction always follow the law of conservation of mass.

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

For example: The chemical reaction is,

$2H_2+O_2\rightarrow 2H_2O$

This reaction is a balanced chemical reaction in which number of atoms of hydrogen and oxygen are equal on the both side of the reaction. So, this reaction obey the law of conservation of mass.

Acid-base reaction : It is a reaction in which an acid react with a base to give salt and water as a product.

Spontaneous reaction : It is a reaction that favors the formation of products at the given set of conditions.

Non-spontaneous reaction : It is a reaction that does not favor the formation of products at the given set of conditions.

Hence, The correct option is, (b) balanced