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The apparatus shown is used in a first-hand investigation to determine and compare the heat of combustion of three different liquid alkanols - HSC - SSCE Chemistry - Question 5 - 2009 - Paper 1
Question 5
The apparatus shown is used in a first-hand investigation to determine and compare the heat of combustion of three different liquid alkanols. Which is the independe... show full transcript
Worked Solution & Example Answer:The apparatus shown is used in a first-hand investigation to determine and compare the heat of combustion of three different liquid alkanols - HSC - SSCE Chemistry - Question 5 - 2009 - Paper 1
Step 1
Which is the independent variable?
Answer
The independent variable in this experiment is the 'Type of alkanol used' (A). This is because the investigation aims to compare the heat of combustion of different liquid alkanols, thereby varying only the type of alkanol while keeping other factors, such as the amount of water and temperature change, constant.