Calcium carbonate, CaCO3 , decomposes upon heating to calcium oxide and carbon dioxide. What mass of solid calcium carbonate is required to produce 2.40 litres of carbon dioxide measured at STP?

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Calcium carbonate, CaCO₃ , decomposes upon heating to calcium oxide and carbon dioxide. What mass of solid calcium carbonate is required to produce 2.40 litres of carbon dioxide measured at STP?

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10.7 g

21.4 g

50.0 g

10.6 g

answer is D.

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Detailed Solution

1 mole of gas 22.7 h.

No. of mole $= \frac{2.4}{22.7}$

weight of CaCO₃ $\frac{2.4}{22.7} \times 100 = 10.6 g$

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