Question

In a reaction 5.3g. of sodium carbonate reacted with 6 g, of ethanoic acid. The product were 2.
corbon dioxide, 0,9 g. of water and some sodium ethanoate. What is the expected weight of so
ethanoate? Prove that this date is in agreement with law of conservation of mass.
​

Answer 1

Explanation:

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.

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Answer 2

Answer:

Na2CO3 + CH3COOH → CO2+H2O + CH3 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.