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Ways to minimize heat loss when measuring the temp. change of a reaction?


-John Yeah-

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I am doing a chemistry IA where I investigated the enthalpy change of displacement reactions (e.g. zinc powder and copper sulphate). The reaction occurred in a polystyrene cup with a lid. A hole was created for the thermometer to pass through and contact with the solution. I realized that some of the heat generated by the reaction is lost to surroundings with this setup.

Is there any way that can minimize heat loss? I found something called "bomb calorimeter". It seems to be able to preserve heat very well but is it only used in combustion reactions?

I am working on the evaluation part.

Any suggestions? :)

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