Question

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)

Some atoms gain mass after the reaction.

The atoms of the reactants are regrouped during the reaction.

There are more H atoms after the reaction.

Atoms of Na are destroyed during the reaction.
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Answer 1

The correct statement is: "The atoms of the reactants are regrouped during the reaction."

Explanation: Chemical reactions rearrange atoms to form new substances; no atoms are created or destroyed (mass is conserved). For example, the number of H atoms is 5 both before and after the reaction, and Na appears in the product, so atoms are simply reorganized.