1. if heat is absorbed by a reaction, carried out in the calorimeter, will the heat of the calorimeter and contents be lost or gained?
2. if heat is evolved by a reaction, carried out in the calorimeter, will the heat of the calorimeter and contents be lost or gained
2007-06-18 05:22:18 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
The first is an endothermic reaction. Heat is absorbed, taken up. The measured temperature drops. Heat is lost.
The second is an exothermic reaction. Heat is generated, given off. The measured temperature increases. Heat is gained.
2007-06-18 05:26:59 · answer #1 · answered by Joe A 2 · 0⤊ 0⤋
If heat is absorbed, the energy goes into something else, like a chemical bond. So while the energy is conserved, heat energy is removed and the calorimeter cools down. If heat is released by a reaction (e.g. gasoline combusting in an engine), then the calorimeter will get hotter.
2007-06-18 05:28:02 · answer #2 · answered by nyphdinmd 7 · 0⤊ 0⤋