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)

There are more H atoms after the reaction.

Some atoms gain mass after the reaction.

Atoms of Na are destroyed during the reaction.

The atoms of the reactants are regrouped during the reaction.
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Answer 1

The atoms of the reactants are regrouped during the reaction.

Explanation: A chemical reaction rearranges atoms into new compounds but does not create or destroy atoms (mass is conserved). For this equation the element counts are the same before and after (Na1, C3, H5, O5), so the atoms are simply regrouped into new molecules.