The chemical equation representing the reaction between baking soda and acetic acid :
[tex]NaHCO_{3}(aq)+CH_{3}COOH(aq)-->CH_{3}COONa(aq)+H_{2}O(l)+CO_{2}(g)[/tex]
According to the Law of conservation of mass, the overall mass is conserved in a chemical reaction. That is total mass of reactants is equal to the mass of the products.
Given here Mass of Baking soda = 15 g
Mass of acetic acid = 10 g
Total mass of the reactants = 15 g +10 g = 25 g
After the reaction, total mass of products = 23 g
This difference in masses must be because one of product carbon dioxide is a gas, which is lost and hence the mass of products is lower than the mass of reactants. Therefore, the mass is conserved in this reaction.
