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Atom and molecules questions answer |
| Answer» 1. In a reaction, 5.3g of sodium carbonate reacted with 6 g of acetic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium acetate. Show that these observations are in agreement with the law of conservation of mass.Sodium carbonate + acetic acid → Sodium acetate + carbon dioxide + waterSolution:Sodium carbonate + acetic acid → Sodium acetate + carbon dioxide + water5.3g 6g 8.2g 2.2g 0.9gAs per the law of conservation of mass, the total mass of reactants must be equal to the total mass ofproductsAs per the above reaction, LHS = RHS i.e., 5.3g + 6g = 2.2g + 0.9 g + 8.2 g = 11.3 gHence the observations are in agreement with the law of conservation of mass. | |