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Stoichiometry

Thermal decom...

Question

Thermal decomposition of calcium chloride gives the respective metallic oxide and carbon dioxide gas only.If 16.8g of calcium carbonate gave 8gof the respective metallic oxide and 8.8g of carbon dioxide,then does the reaction observation agree with the law of conservation of mass.Explain

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Solution

The reaction is CaCO₃ = CaO + CO₂

According to the Law of conservation of mass, mass of reactants = mass of products

Mass of reactant, CaCO₃ = 16.8 .

Mass of product, CaO and CO₂ = 8 g + 8.8 g = 16.8g

Hence, the reaction follows the Law of Conservation of mass.

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