question archive 2 g of a limestone sample containing CaCO3 as the basic substance was dissolved in 50cm of 1
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2 g of a limestone sample containing CaCO3 as the basic substance was dissolved in 50cm of 1.0 HCl.the resulting solution was made up to 250cm of water.25cm of this solution was 11.6 cm of 1.0 M NaOH for neutralisation.calculate the CaCO3 present in the limestone sample.note the ratio of HCl to CaCO3 from the balanced equation is 2:1