A student burns 12 g of carbon completely in oxygen. According to the equation C + O₂ → CO₂, what volume of carbon dioxide is produced at STP? (Molar volume at STP = 22.4 dm³, Ar of C = 12)

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Question

A student burns 12 g of carbon completely in oxygen. According to the equation C + O₂ → CO₂, what volume of carbon dioxide is produced at STP? (Molar volume at STP = 22.4 dm³, Ar of C = 12)

Accepted Answer

22.4 dm³ — 4 dm³. Award 1 mark for correct calculation: Moles of C = 12 ÷ 12 = 1 mol; From equation, 1 mol C produces 1 mol CO₂; Volume = 1 × 22.4 = 22.4 dm³. A is incorrect — halves the molar volume. C is incorrect — doubles the molar volume. D is incorrect — divides molar volume by 10.

Answer

11.2 dm³

Answer

2.24 dm³

Answer

22.4 dm³

Answer

44.8 dm³

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