IB Chemistry
Mole Calculations Practice Hub
Practice with original ChemFunatics Paper 1 questions and step-by-step video explanations organised by IB topic.
QUESTION ID:
STO-MOL-0002
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<1 min
2 NO + O₂ → 2 NO₂
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QUESTION ID:
STO-MOL-0003
P1 •
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<1 min
N₂ + 3 H₂ → 2 NH₃
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QUESTION ID:
STO-MOL-0004
P1 •
HL •
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<1 min
2 Na + Cl₂ → 2 NaCl
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QUESTION ID:
STO-MOL-0005
P1 •
HL •
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<1 min
2 SO₂ + O₂ → 2 SO₃
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QUESTION ID:
STO-MOL-0006
P1 •
HL •
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<1 min
CH₄ + 2 O₂ → CO₂ + 2 H₂O
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QUESTION ID:
STO-MOL-0007
P1 •
HL •
Easy •
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<1 min
2 KClO₃ → 2 KCl + 3 O₂
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QUESTION ID:
STO-MOL-0008
P1 •
HL •
Easy •
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<1 min
2 Mg + O₂ → 2 MgO
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QUESTION ID:
STO-MOL-0009
P1 •
HL •
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<1 min
4 Fe + 3 O₂ → 2 Fe₂O₃
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QUESTION ID:
STO-MOL-0010
P1 •
HL •
Easy •
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<1 min
CaO + CO₂ → CaCO₃
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QUESTION ID:
STO-MOL-0011
P1 •
HL •
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<1 min
3 CaCO₃ + 2 H₃PO₄ → Ca₃(PO₄)₂ + 3 CO₂ + 3 H₂O
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QUESTION ID:
STO-MOL-0012
P1 •
HL •
Easy •
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<1 min
Ca + 2 HCl → CaCl₂ + H₂
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QUESTION ID:
STO-MOL-0013
P1 •
HL •
Easy •
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<1 min
2 H₂ + O₂ → 2 H₂O
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QUESTION ID:
STO-MOL-0014
P1 •
HL •
Easy •
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<1 min
2 HCl + CaCO₃ → CaCl₂ + H₂O + CO₂
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QUESTION ID:
STO-MOL-0015
P1 •
HL •
Easy •
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<1 min
2 KClO₃ → 2 KCl + 3 O₂
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QUESTION ID:
STO-MOL-0016
P1 •
HL •
Easy •
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<1 min
2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O
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QUESTION ID:
STO-MOL-0017
P1 •
HL •
Easy •
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<1 min
2 C₂H₆ + 7 O₂ → 4 CO₂ + 6 H₂O
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QUESTION ID:
STO-MOL-0018
P1 •
HL •
Easy •
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<1 min
2 Na + Cl₂ → 2 NaCl
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QUESTION ID:
STO-MOL-0019
P1 •
HL •
Easy •
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<1 min
CaO + CO₂ → CaCO₃
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QUESTION ID:
STO-MOL-0020
P1 •
HL •
Easy •
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<1 min
Zn + 2 HCl → ZnCl₂ + H₂
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