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When 4.2 g of NaHCO_(3) is added to a solution of acetic acid (CH_(3)COOH) weighing 10.0 g, it is observed that 2.2 g of CO_(2) is released into the atmosphere. The residue left behind is found to weigh 12.0 g. Show that these observation are in agreement with the law of conservation of mass. |
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Answer» Solution :`underset(4.2g)(NaHCO_(3))+underset(10.0g)(CH_(3)COOH)rarrunderset("RESIDUE = 12.0 g")(ubrace(CH_(3)COONa+H_(2)))+underset(2.2g)(CO_(2))uarr` `"Total mass of reactants = 4.2 + 10.2 g = 14.2 g"` `"Total mass of PRODUCTS"= 12.0 +2.2g=14.2g` |
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