How much amount of CaCO3 in gm having % purity 50 percent produces 0.56 litre of CO2 at STP on heating. (Answer 5)

Question

How much amount of CaCO3 in gm having % purity 50 percent produces 0.56 litre of CO2 at STP on heating.    (Answer 5)

DrBob222 · Accepted Answer

CaCO3 ==> CaO + CO2 Use PV = nRT and solve for n for CO2 Convert mols CO2 to mols CaCO3, then to grams CaCO3 Finally, multiply g CaCO3 by 2 since it is only 50% pure.