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Question 16

From Chemistry HL Paper 1 (May 2024, TZ2)

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  1. A student determined the enthalpy change of combustion of a fuel by burning it in a spirit burner placed under a metal can containing 100 cm3 of water.
Diagram showing a spirit burner heating a metal can containing water, with a thermometer and clamp. Labels indicate 'Thermometer', 'Clamp', 'Metal can', 'Water', 'Spirit burner', and 'Fuel'.
Diagram showing a spirit burner heating a metal can containing water, with a thermometer and clamp. Labels indicate 'Thermometer', 'Clamp', 'Metal can', 'Water', 'Spirit burner', and 'Fuel'.

Which modification can improve the accuracy of the experiment?