A foam cup calorimeter containing 100 mL of water is calibrated by passing an electric current through a small heater placed in the solution - VCE - SSCE Chemistry - Question 14 - 2008 - Paper 1
Question 14
A foam cup calorimeter containing 100 mL of water is calibrated by passing an electric current through a small heater placed in the solution.
Assuming that all meas... show full transcript
Worked Solution & Example Answer:A foam cup calorimeter containing 100 mL of water is calibrated by passing an electric current through a small heater placed in the solution - VCE - SSCE Chemistry - Question 14 - 2008 - Paper 1
Step 1
Determine the heat capacity of water
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Answer
The heat capacity of water is approximately 4.18 J/g°C. For 100 mL of water (which has a mass of approximately 100 g), this translates to a total heat capacity of:
C=100extgimes4.18extJ/g°C=418extJ/°C
Step 2
Estimate the calibration factor
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Answer
Given the total heat capacity is 418 J/°C, the closest option from the provided choices would be 480 J/°C. Hence, the most likely calibration factor is:
