This question is about experiments involving ethanol. Whilst evaluating the method used in (c), the student found a diagram of an alternative apparatus as shown. Explain two reasons why this apparatus is likely to give a more accurate value for the enthalpy change of combustion of ethanol. (3) ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................ ................................................................................................................................................................................................................................................................................

Chemistry

IGCSE&ALevel

EDEXCEL

Exam No：wch13-01-que-20240123 Year：2024 Question No：4(d)

Answer:

An explanation that makes reference to the following points:
- as copper coil conducts heat from emissions / waste gases / hot gases into water
(1)
- less heat loss (to the atmosphere)
(1)
- (constant) supply of air into apparatus so less chance of incomplete combustion
(1)

Answer:

Knowledge points:

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Answer:

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