Questions1. In a reaction, 5.3 g of sodium carbonate reacted with 6 g of acetic acid. The products were 2.2 g of carbon diodde, 0.99 water and 8.2 g of sodium acetate. Show that these observation are in agreement with the law of conservation of mass .
sodiom carbonate + acetic acid sodium acetate + carbon dioxide +water
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SolutionLet us start from the reactant sideIn the reactant side we have sodium carbonate and ethanoic acidMass of sodium carbonate=5.3g (given)Mass of ethanoic acid=6g(given)Now total mass before reaction that is mass of reactants = (5.3g + 6g) = 11.3gNow let us check product sideMass of carbon dioxide = 2.2g (given)Mass of water = 0.9g (given)Mass of sodium ethanoate = 8.2g (given)Now total mass after reaction that is mass of products = (8.2g + 2.2g + 0.9g) = 11.3gConclusionTotal mass before reaction=total mass after reactionTherefore the given observation is in agreement with the law of conservation of mass.
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