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 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass.

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According to Law of conservation of mass;

Total mass of product is equal to total mass of reactant during any physical and chemical changes.

Or

Matter can neither be created nor destroyed during any physical and chemical changes.

Now in question given that,

Reactants used,

Sodium carbonate = 5.3g
Ethanoic acid = 6g

Products we get,

Carbon dioxide = 2.2g
Water = 0.9g
Sodium ethanoate =8.2g

Total weight of reactants = 5.3 + 6 = 11.3 g
Total weight of products = 2.2 + 0.9 +8.2 = 11.3 g

Therefore,
Weight of reactant = weight of product

Final Answer:

Hence, Weight of reactant is equal to Weight of product i.e. it follows law of mass action that matters neither be created nor destroyed during any physical and chemical changes.