In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass.
sodium carbonate + ethanoic acid `to` sodium ethanoate + carbon dioxide + water

Explanation

The chemical reaction is :
Sodium carbonate + ethanoic acid `to` sodium ethanoate + carbon dioxide + water
Mass of reactants = 5.3 + 6.0 = 11.3 g
Mass of products = 2.2 + 0.9 + 8.2 = 11.3g
Therefore, mass of products is equal to the mass of reactants. Thus these observations are in agreement with the law of conservation of mass according to which mass can neither be created nor destroyed in a chemical reaction.