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Answer to Question #85043 in Chemistry for Cg

Question #85043
a sample of CaCO3 of mass 2.8g was reacted with 75 cm3 of 1.0 mol/dm3 hydrochloride acid. The resulting solution was completely transferred into 250 cm3 of volumetric flask and the mixture made up to the mark with distilled water. 25 cm3 of this solution needed 20.05 cm3 of 1.0 mol/dm3 of NaOH to neutralize the excess acid. Calculate the percentage of CaCO3 present in the sample.
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Expert's answer
2019-02-12T06:51:31-0500
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