A student carried out an experiment to measure the specific latent heat of fusion of ice - Leaving Cert Physics - Question 2 - 2023
Question 2
A student carried out an experiment to measure the specific latent heat of fusion of ice. The following is an extract from her report.
"I first set up the apparatus... show full transcript
Worked Solution & Example Answer:A student carried out an experiment to measure the specific latent heat of fusion of ice - Leaving Cert Physics - Question 2 - 2023
Step 1
Draw a labelled diagram of the apparatus used in the experiment.
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Answer
The labelled diagram should include:
A calorimeter or beaker containing water.
A thermometer placed in the water to measure the initial and final temperatures.
An electronic balance to measure the mass of the ice.
Insulation around the calorimeter to reduce heat loss.
A stirring device to ensure even distribution of temperature in the water.
Step 2
How did the student prepare the ice for the experiment?
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The student prepared the ice by placing it in a suitable container, such as a beaker, and kept it in the freezer to ensure it was completely frozen before use.
Step 3
How did the student know that the ice was at 0 °C?
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The student knew that the ice was at 0 °C because it was at the freezing point of water, and she utilized a thermometer to confirm that the temperature was indeed at this point.
Step 4
How did the student find the mass of the ice?
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The student found the mass of the ice by using an electronic balance, where she placed the container with the ice on the balance and recorded the weight of the ice.
Step 5
Why did the student use warm water in the experiment?
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The student used warm water to provide sufficient energy to melt the ice, ensuring that the heat transfer was efficient and that the experiment could accurately measure the latent heat of fusion.
Step 6
What precaution did the student take when adding the ice to the water?
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The student ensured that the ice was dry before adding it to the water to prevent additional ice or cold water from affecting the temperature readings. Additionally, she wore gloves to avoid direct contact with the ice and ensure safety.
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