Mole Concept
0.50 mol of CaCO3 is heated strongly. How many liters of CO2 (at STP) are evolved? (CaCO3 → CaO + CO2)
Select the correct option:
Solution
11.2 L
- Reaction Balance: CaCO3(s)ΔCaO(s)+CO2(g).
- Stoichiometry: 1 mol CaCO3 produces 1 mol CO2.
- Calculate Moles CO2: 0.50 mol CaCO3→0.50 mol CO2.
- Convert to Volume at STP:
- Volume=Moles×22.4 L
- Volume=0.50×22.4=11.2 L.
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About This Question
- Subject
- chemistry
- Chapter
- some basic concepts in chemistry
- Topic
- mole concept
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
11.2 L
- Reaction Balance: CaCO3(s)ΔCaO(s)+CO2(g).
- Stoichiometry: 1 mol CaCO3 produces 1 mol CO2.
- Calculate Moles CO2: 0.50 mol CaCO3→0.50 mol CO2.
- Convert to Volume at STP:
- Volume=Moles×22.4 L
- Volume=0.50×22.4=11.2 L.
This easy difficulty chemistry question is from the chapter some basic concepts in chemistry, covering the topic of mole concept. It appeared in the 2025 exam.
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