Question

question

CHM 2046 Lab 6 - Constant Pressure calorimetry 10. Energy content per gram in this simple experiment is typically lower than the actual energy content on the nutrition label. Explain why this is. (What in the set-up makes our results inaccurate).

Data

Answer 1

a simple experiment for calorimetry: coffee cup calorimetry

components of calorimeter:

1. thermometer

2. stirrer for mixing

3. reaction mixture in water

4. insulated vessels or cups(adiabatic walls )

among all, rection vessels should be perfectly adiabatic. i.e vessel should not exchange Heat with its surroundings. but in simple experiments, we can not make the walls 100% adiabatic. reaction vessels exchange the released heat with surroundings. so that it gives lower heat compared actual.