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Stoichiometry and Percentage Purity

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18.18% Weightage

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2023 1 question

The right option for the mass of $CO_2$ produced by heating 20 g of 20% pure limestone is (Atomic mass of $Ca=40$): $CaCO_3\xrightarrow{1200\ K}CaO+CO_2$

2022 1 question

What mass of 95% pure $CaCO_3$ will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction? $CaCO_{3(s)}+2HCl_{(aq)}\rightarrow CaCl_{2(aq)}+CO_{2(g)}+2H_2O_{(l)}$ [Calculate upto second place of decimal point]