Heat of Fusion of Ice Lab Questions 1. Some students find their experimental hea
ID: 840328 • Letter: H
Question
Heat of Fusion of Ice Lab Questions
1. Some students find their experimental heat of fusion is lower than the literature value. Give a reasonable source of experimental error that would lead to a lower than literature experimental heat of fusion. In other words, explain what source of error could cause the result to be too low. ( assume all data was recorded correctly and calculations were done correctly.)
2. One way to experimentally measure the heat capacity of a Styrofoam cup calorimeter would be to melt a known mass of ice in warm water and measure hte temperature change. Use the data below to determine the experimental heat capacity of the calorimeter. Use the literature heat of fusion for ice in your calculations. Assume the ice added is at 0.00 c.
mass of ice added: 17.69g
mass of water in the calorimeter: 98.67g
T initial: 28.7 degrees celcius
T final: 12.9 degrees celcius
THANK YOU!
Explanation / Answer
Q1.
Change of Heat of fussion:
Most likely error was --> there are impurities present, such as salts, or molecular species, which will lower vapor pressure of the sample, therefore increases the heat of enthalpy
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