January 11, 2025, 06:40:10 PM
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Topic: Design an investigation for thermodynamics - question about basic assumption  (Read 2395 times)

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Offline gt5hz

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"Design an investigation to determine the enthalpy change of the combustion of ethanol using a wick-type burner, similar to that in a kerosene lamp."

Do I have to make the assumption that I can only use the wick-type burner? Would I be out of place to include a bomb calorimeter somewhere into the mix? I was thinking about doing it in steps and then using Hess's law for the overall rxn. Would it even be possible to perform the investigation with only the wick-type burner?

Offline cliverlong

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I suggest you draw, or find online, a simple diagram of apparatus to perform such an experiment.

Think about each piece of equipment to understand its role in the reaction

Think about how the chemical equation and the relevant enthalpy equations allow you to calculate the amount of heat/enthalpy the reaction is generating.

Think about inaccuracies in measurement and heat losses that can occur during the experiment, how that affects the accuracy of the calculated result and think how to modify the apparatus to improve the accuracy or minimize lossess leading to inaccuracies.

Clive

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