How much lime (CaO) can be obtained by heatin | vedclass

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(A) The chemical reaction for the decomposition of limestone is: $CaCO_3(s) ightarrow CaO(s) + CO_2(g)$Molar mass of $CaCO_3 = 40 + 12 + (3 	imes 1

Vedclass · Accepted Answer

$106.4$

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(A) The chemical reaction for the decomposition of limestone is: $CaCO_3(s) ightarrow CaO(s) + CO_2(g)$Molar mass of $CaCO_3 = 40 + 12 + (3 	imes 16) = 100 \ g/mol$.Molar mass of $CaO = 40 + 16 = 56 \ g/mol$.Pure $CaCO_3$ in $200 \ kg$ of limestone $= 200 \ kg 	imes 0.95 = 190 \ kg$.According to the stoichiometry,$100 \ kg$ of $CaCO_3$ produces $56 \ kg$ of $CaO$.Therefore,$190 \ kg$ of $CaCO_3$ will produce: $(56 / 100) 	imes 190 = 106.4 \ kg$ of $CaO$.

How much lime $(CaO)$ can be obtained by heating $200 \ kg$ of limestone which is $95 \%$ pure? ............... $kg$

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