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In a coffee cup calorimetry experiment, what data or information is needed to determine the enthalpy...

In a coffee cup calorimetry experiment, what data or information is needed to determine the enthalpy change for a reaction? Support your answer using any appropriate mathematical equation(s).

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Answer #1

Calorimeter is a device used to measure the amount of heat exchange in a chemical reaction. Two common types of calorimeters are:-coffee cup calorimeter and the bomb calorimeter.

A coffee cup calorimeter contain a polystyrene/Styrofoam cup with a lid. The cup is filled with a known volume of water and a thermometer is inserted through the lid.

When a chemical reaction occurs the heat of the reaction is absorbed by the water. The change in the water temperature is used to calculate the amount of heat that has been absorbed or evolved.

Heat flow is calculated using the following mathematical relation:-q = (specific heat) x m x Δt

where q = heat flow, m=mass in grams, Δt =change in temperature.

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