Question

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 water and 8.2 g of sodium ethanoate.

Show that these observations are in agreement with the law of conservation of

mass.​

Answer 1

Explanation:

According to the question,

Na2CO3+CH3COOH→CO2 +H2O+CH3COONa

Mass of reactants =5.3+6=11.3 gm

Mass of products =2.2+0.9+8.2=11.3 gm

This shows, that during a chemical reaction, the mass of reactant = mass of the product.

Hence, it shows the law of conservation of mass.

Answer 2

Answer:

According to the question,

Na

2

CO

3

+CH

3

COOH→CO

2

+H

2

O+CH

3

COONa

Mass of reactants =5.3+6=11.3 gm

Mass of products =2.2+0.9+8.2=11.3 gm

This shows, that during a chemical reaction, the mass of reactant = mass of the product.

Hence, it shows the law of conservation of mass.