Use the chemical reaction to answer the question.
NaHCO3+HC2H3O2→NaC2H3O2+H2O+CO2
A student mixes baking soda ( NaHCO3
) and acetic acid ( HC2H3O2
) to produce a chemical reaction shown. Which statement about the reaction is correct?
(1 point)
Responses
There are more H atoms after the reaction.
There are more H atoms after the reaction.
Atoms of Na are destroyed during the reaction.
Atoms of Na are destroyed during the reaction.
The atoms of the reactants are regrouped during the reaction.
The atoms of the reactants are regrouped during the reaction.
Some atoms gain mass after the reaction.
According to the principle of conservation of mass, atoms are neither created nor destroyed, and their masses don't change during a chemical reaction. They are simply rearranged to form new products. Given this, we can evaluate each statement:
1. "There are more H atoms after the reaction." - This statement is incorrect because the total number of H atoms on both sides of the equation remains constant. The number of H atoms in NaHCO3 and HC2H3O2 equals the number of H atoms in the products H2O and CO2.
2. "Atoms of Na are destroyed during the reaction." - This statement is incorrect because atoms are not destroyed in a chemical reaction; they are merely rearranged. The sodium atom (Na) from NaHCO3 appears in the product NaC2H3O2, maintaining conservation of atoms.
3. "The atoms of the reactants are regrouped during the reaction." - This statement is correct. The atoms in the reactants NaHCO3 and HC2H3O2 are rearranged to form the products NaC2H3O2, H2O, and CO2.
4. "Some atoms gain mass after the reaction." - This statement is incorrect. Atoms do not gain mass in chemical reactions; the mass of atoms is conserved, and the total mass remains constant before and after the reaction.
Thus, the correct statement about the reaction is: The atoms of the reactants are regrouped during the reaction.