Question

In a reaction,5.0 g of calcium carbonate on heating gave 2.8 g of calium oxideband 2.2 g of carbon dioxide. show that these observation are in agreement with the law of conservation of mass. calium carbonate =calium oxide + carbon dioxide​

Answer 1

Answer:

The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed.

Explanation:

The law of conservation of mass states that in a chemical reaction mass is neither created nor destroyed. That means the sum of the masses of reactants in a reaction is equal to the sum of the mass of the product obtained in the reaction.

Here, CaCO₃→ CaO + CO₂

 Mass of reactant= 5$g$-----------------------------(1)

Mass of products:

         Mass of CaO = 2.8$g$

         Mass of CO₂ = 2.2$g$

Total mass of the products = 2.8+ 2.2 = 5$g$------(2)

From (1) and (2): mass of reactants = mass of the products

Therefore, This reaction is in agreement with the law of conservation of mass.