When excess of CaCO3 is treated with 100 ml of HCl solution.The CO2 gas obtained was found to be 1.12 l (at N.T.P).What is the Normality of HCl?
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6.5g of an impure sample of limestone liberates 2.2g of carbon dioxide on strong heating. The percentage of purity of limestone in sample is 85.2% , 76.9%
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