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

Sodium carbonate + acetic acid ⟶ Sodium acetate + carbon dioxide + water

As per the law of conservation of mass, the total mass of reactants must be equal to the total mass of products.

Sodium carbonate + acetic acid ⟶ Sodium acetate + carbon dioxide + water

5.3 g + 6 g ⟶ 8.2 g + 2.2 g + 0.9 g

⇒ 11.3 g ⟶ 11.3 g

As per the above reaction, L.H.S. = R.H.S. = 11.3 g

Hence, the observations are in agreement with the law of conservation of mass.