Question

If 5.8 g of Magnesium carbonate are added to 15 g of Acetic acid solution, the residue is found to weigh 17 g. What is then mass of carbon dioxide released in the reaction?​

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.