Short answerEasy2 marks
Propane burns in air according to the following equation : C₃H₈ + 5O₂ ⟶ 3CO₂ + 4H₂O What volume of propane is consumed on using 1000 cm3 of air, considering only 20% of air contains oxygen.
Topic: Mole concept, gas volumes and stoichiometry
Previous-year question practice database
Answer
Exam answer
40 cm³ propane.
Explanation
1000 cm³ air contains 200 cm³ O₂; C₃H₈:O₂ = 1:5.
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