The diagram is of an apparatus used to show that exhaled air contains carbon dioxide - Junior Cycle Science - Question d - 2006
Question d
The diagram is of an apparatus used to show that exhaled air contains carbon dioxide. When performing this experiment a control is required to show that inhaled air ... show full transcript
Worked Solution & Example Answer:The diagram is of an apparatus used to show that exhaled air contains carbon dioxide - Junior Cycle Science - Question d - 2006
Step 1
air entering tube as shown
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Answer
In the control experiment, air should enter the tube at the point indicated in the diagram, ensuring that the air being tested is not exhaled but rather regular ambient air.
Step 2
gas being removed as shown
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Answer
The setup must show that exhaled CO2 is being distinctly identified. This can be achieved by using limewater to absorb any CO2 present, allowing us to compare its clarity to that of the limewater when inhaled air is tested.
Step 3
limewater labelled
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It is essential to label the limewater clearly in the diagram, indicating its role in detecting carbon dioxide through the observed changes in color or cloudiness when CO2 is presented.
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