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Energy from Fuels (DP IB Chemistry: HL): Exam Questions

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Energy from Fuels

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11 mark

Which of the following products are possible from the incomplete combustion of alkanes?

I.  C

II.  CO

III.  H2

  • I and II only

  • I and III only

  • II and III only

  • I, II and III

Choose your answer

21 mark

Which gas is present in the largest proportion in the exhaust fumes of a car engine?

  • carbon monoxide 

  • carbon dioxide

  • water vapour 

  • nitrogen

Choose your answer

31 mark

Which of the following are greenhouse gases?

I.  methane

II. water vapour

III. argon

  • I only 

  • I and II only 

  • II and III only 

  • I, II and III

Choose your answer

11 mark

Which volume of oxygen measured at room temperature and pressure is needed for complete combustion of 0.1 mol of propane? (Molar volume = 24dm3 at rtp)

  • 12.0 dm3

  • 5.0 dm3

  • 20.0 dm3

  • 24.0 dm3

Choose your answer

21 mark

Which process converts glucose to ethanol during the production of bioethanol? 

  • Transesterification

  • Photosynthesis

  • Fermentation

  • Cracking

Choose your answer

31 mark

What is the correct equation for the complete combustion of ethane? 

  • C2H6   +   3O2  →   2CO2   +   3H2O

  • 2C2H6   +   7O2  →   4CO2   +   6H2O

  • 2C2H6   +   5O2  →   4CO   +   6H2O

  • C2H6   +   4O2  →   2CO2   +   3H2O

Choose your answer

11 mark

Which compound has an Mr of 84.18 and will react with HBr to give a product with an Mr of 165.09?

10-2-h-q3-ib-chemistry-mcqs

    Choose your answer

    21 mark

    What is the whole number coefficient for oxygen when the equation for the combustion of pentanol is balanced?

    C5H11OH(g) + O2  → CO2(g) + H2O(g)

    • 7

    • 8

    • 15

    • 16

    Choose your answer

    31 mark

    Which half- equation represents the reaction that happens at the anode in a hydrogen fuel cell that uses an alkaline electrolyte?

    • 2H2 (g) + 4OH– (aq)  →  4H2O (l) +  4e–     

    • O2 (g) +  2H2O  +  4e– →  4OH– (aq)      

    • 2H2 (g) + 4OH– (aq)  +  4e-   →  4H2O (l) 

    • O2 (g) +  2H2O  +  4e– →  4OH– (aq)      

    Choose your answer