Chemistryhard · Past Paper
What is the volume of CO2 produced at STP when 10 grams of calcium carbonate (CaCO3) is strongly heated?
A1.12 L
B2.24 L
C22.4 L
D4.48 L
✓ Correct Answer: B — 2.24 L
Molar mass of CaCO3 is 100g. 100g produces 22.4L of CO2 at STP. Therefore, 10g produces 2.24L.
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