Question

1) Define the law of conservation of mass. If 5.3g of Sodium carbonate
reacts with 6g of ethanoic acid to give 8.2g of sodium ethanoate, 2.2g of carbon dioxide and 0.9g of water. Show the given information verifies the Law of Conservation of mass.​

Answer 1

Answer:

The law of conservation of mass states that “The mass in an isolated system can neither be created nor be destroyed but can be transformed from one form to another”. According to the law of conservation of mass, the mass of the reactants must be equal to the mass of the products for a low energy thermodynamic process

Answer 2

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

1)

In the reactant side we have sodium carbonate and ethanoic acid

Mass of sodium carbonate=5.3g (given)

Mass of ethanoic acid=6g(given)

Now total mass before reaction that is mass of reactants = (5.3g + 6g) = 11.3g

Now let us check product side

Mass of carbon dioxide = 2.2g (given)

Mass of water = 0.9g (given)

Mass of sodium ethanoate = 8.2g (given)

Now total mass after reaction that is mass of products = (8.2g + 2.2g + 0.9g) = 11.3g

Conclusion

Total mass before reaction=total mass after reaction

Therefore the given observation is in agreement with the law of conservation of mass.